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Print a certain string only the first time it appears in a test file
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Print a certain string only the first time it appears in a test file
#1
Hey all. I have a large text file that contains several repetitive statements along with other text.
(Shown in python tags to get a scrollbar)
    P3 Rest Octets
        H... .... = Channel Needed 3 & 4: Present
        .11. .... = Channel 3: TCH/H or TCH/F (Dual rate) (3)
        ...1 1... = Channel 4: TCH/H or TCH/F (Dual rate) (3)
        .... .L.. = NLN(PCH): Not Present
        .... ..L. = Priority 1: Not Present
        .... ...L = Priority 2: Not Present
        L... .... = Priority 3: Not Present
        .L.. .... = Priority 4: Not Present
        Padding Bits: default padding

Frame 27: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.707941000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.707941000 seconds
    [Time delta from previous captured frame: 0.004602000 seconds]
    [Time delta from previous displayed frame: 0.004602000 seconds]
    [Time since reference or first frame: 0.265246000 seconds]
    Frame Number: 27
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm:gsm_a.dtap]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18b8 (6328)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23f0 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SDCCH/8 (2)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585904
    Channel Type: SDCCH/8 (8)
    Antenna Number: 5
    Sub-Slot: 2
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x03
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..1. = C/R: 1
        .... ...1 = EA: Final octet (1)
    Control field: I, N(R)=2, N(S)=2 (0x44)
        010. .... = N(R): 2
        .... 010. = N(S): 2
        .... ...0 = Frame type: Information frame (0x0)
    Length Field: 0x09
        0000 10.. = Length: 2
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)
    [2 Message fragments (22 bytes): #5(20), #27(2)]
        [Frame: 5, payload: 0-19 (20 bytes)]
        [Frame: 27, payload: 20-21 (2 bytes)]
        [Message fragment count: 2]
        [Reassembled LAPDm length: 22]
GSM A-I/F DTAP - Location Updating Accept
    Protocol Discriminator: Mobility Management messages (5)
        .... 0101 = Protocol discriminator: Mobility Management messages (0x5)
        0000 .... = Skip Indicator: No indication of selected PLMN (0)
    00.. .... = Sequence number: 0
    ..00 0010 = DTAP Mobility Management Message Type: Location Updating Accept (0x02)
    Location Area Identification (LAI)
        Location Area Identification (LAI) - 410/01/10470
            Mobile Country Code (MCC): Pakistan (410)
            Mobile Network Code (MNC): Mobilink (01)
            Location Area Code (LAC): 0x28e6 (10470)
    Mobile Identity - TMSI/P-TMSI (0x462b5dfb)
        Element ID: 0x17
        Length: 5
        1111 .... = Unused: 0xf
        .... 0... = Odd/even indication: Even number of identity digits
        .... .100 = Mobile Identity Type: TMSI/P-TMSI/M-TMSI (4)
        TMSI/P-TMSI: 0x462b5dfb
    PLMN List Equivalent - 2 PLMNs
        Element ID: 0x4a
        Length: 6
        PLMN[1]
            Mobile Country Code (MCC): 410
            Mobile Network Code (MNC): 01
        PLMN[2]
            Mobile Country Code (MCC): 410
            Mobile Network Code (MNC): 07

Frame 28: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.715805000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.715805000 seconds
    [Time delta from previous captured frame: 0.007864000 seconds]
    [Time delta from previous displayed frame: 0.007864000 seconds]
    [Time since reference or first frame: 0.273110000 seconds]
    Frame Number: 28
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:gsm_a.ccch]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18b9 (6329)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23ef [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 0, Channel: CCCH (1)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 0
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -42
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585908
    Channel Type: CCCH (2)
    Antenna Number: 104
    Sub-Slot: 1
GSM CCCH - Paging Request Type 2
    L2 Pseudo Length
        0010 11.. = L2 Pseudo Length value: 11
    .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
        .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
        0000 .... = Skip Indicator: No indication of selected PLMN (0)
    Message Type: Paging Request Type 2
    Page Mode
        .... 0000 = Page Mode: Normal paging (0)
    Channel Needed
        ..11 .... = Channel 1: TCH/H or TCH/F (Dual rate) (3)
        11.. .... = Channel 2: TCH/H or TCH/F (Dual rate) (3)
    TMSI/P-TMSI - Mobile Identity 1
        TMSI/P-TMSI
            TMSI/P-TMSI Value: 0x5e304054
    TMSI/P-TMSI - Mobile Identity 2
        TMSI/P-TMSI
            TMSI/P-TMSI Value: 0x452b53d4
    P2 Rest Octets
        L... .... = Channel Needed 3: Not Present
        .L.. .... = NLN(PCH): Not Present
        ..L. .... = Priority 1: Not Present
        ...L .... = Priority 2: Not Present
        .... L... = Priority 3: Not Present
        .... .L.. = Packet Paging Procedure 1: For RR connection establishment
        .... ..L. = Packet Paging Procedure 2: For RR connection establishment
        .... ...L = Packet Paging Procedure 3: For RR connection establishment
        L... .... = Additions in release 6: Not Present
        Padding Bits: default padding

Frame 29: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.716563000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.716563000 seconds
    [Time delta from previous captured frame: 0.000758000 seconds]
    [Time delta from previous displayed frame: 0.000758000 seconds]
    [Time since reference or first frame: 0.273868000 seconds]
    Frame Number: 29
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm:gsm_a.dtap]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18ba (6330)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23ee [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SDCCH/8 (3)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585908
    Channel Type: SDCCH/8 (8)
    Antenna Number: 127
    Sub-Slot: 3
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x03
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..1. = C/R: 1
        .... ...1 = EA: Final octet (1)
    Control field: I, N(R)=2, N(S)=2 (0x44)
        010. .... = N(R): 2
        .... 010. = N(S): 2
        .... ...0 = Frame type: Information frame (0x0)
    Length Field: 0x09
        0000 10.. = Length: 2
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)
    [2 Message fragments (22 bytes): #7(20), #29(2)]
        [Frame: 7, payload: 0-19 (20 bytes)]
        [Frame: 29, payload: 20-21 (2 bytes)]
        [Message fragment count: 2]
        [Reassembled LAPDm length: 22]
GSM A-I/F DTAP - Location Updating Accept
    Protocol Discriminator: Mobility Management messages (5)
        .... 0101 = Protocol discriminator: Mobility Management messages (0x5)
        0000 .... = Skip Indicator: No indication of selected PLMN (0)
    00.. .... = Sequence number: 0
    ..00 0010 = DTAP Mobility Management Message Type: Location Updating Accept (0x02)
    Location Area Identification (LAI)
        Location Area Identification (LAI) - 410/01/10470
            Mobile Country Code (MCC): Pakistan (410)
            Mobile Network Code (MNC): Mobilink (01)
            Location Area Code (LAC): 0x28e6 (10470)
    Mobile Identity - TMSI/P-TMSI (0x462b5dfb)
        Element ID: 0x17
        Length: 5
        1111 .... = Unused: 0xf
        .... 0... = Odd/even indication: Even number of identity digits
        .... .100 = Mobile Identity Type: TMSI/P-TMSI/M-TMSI (4)
        TMSI/P-TMSI: 0x462b5dfb
    PLMN List Equivalent - 2 PLMNs
        Element ID: 0x4a
        Length: 6
        PLMN[1]
            Mobile Country Code (MCC): 410
            Mobile Network Code (MNC): 01
        PLMN[2]
            Mobile Country Code (MCC): 410
            Mobile Network Code (MNC): 07

Frame 30: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.723780000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.723780000 seconds
    [Time delta from previous captured frame: 0.007217000 seconds]
    [Time delta from previous displayed frame: 0.007217000 seconds]
    [Time since reference or first frame: 0.281085000 seconds]
    Frame Number: 30
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:gsm_a.ccch]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18bb (6331)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23ed [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 0, Channel: CCCH (2)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 0
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -42
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585912
    Channel Type: CCCH (2)
    Antenna Number: 53
    Sub-Slot: 2
GSM CCCH - Paging Request Type 2
    L2 Pseudo Length
        0010 11.. = L2 Pseudo Length value: 11
    .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
        .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
        0000 .... = Skip Indicator: No indication of selected PLMN (0)
    Message Type: Paging Request Type 2
    Page Mode
        .... 0000 = Page Mode: Normal paging (0)
    Channel Needed
        ..11 .... = Channel 1: TCH/H or TCH/F (Dual rate) (3)
        11.. .... = Channel 2: TCH/H or TCH/F (Dual rate) (3)
    TMSI/P-TMSI - Mobile Identity 1
        TMSI/P-TMSI
            TMSI/P-TMSI Value: 0x56310ec1
    TMSI/P-TMSI - Mobile Identity 2
        TMSI/P-TMSI
            TMSI/P-TMSI Value: 0x452d9879
    P2 Rest Octets
        L... .... = Channel Needed 3: Not Present
        .L.. .... = NLN(PCH): Not Present
        ..L. .... = Priority 1: Not Present
        ...L .... = Priority 2: Not Present
        .... L... = Priority 3: Not Present
        .... .L.. = Packet Paging Procedure 1: For RR connection establishment
        .... ..L. = Packet Paging Procedure 2: For RR connection establishment
        .... ...L = Packet Paging Procedure 3: For RR connection establishment
        L... .... = Additions in release 6: Not Present
        Padding Bits: default padding

Frame 31: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.724162000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.724162000 seconds
    [Time delta from previous captured frame: 0.000382000 seconds]
    [Time delta from previous displayed frame: 0.000382000 seconds]
    [Time since reference or first frame: 0.281467000 seconds]
    Frame Number: 31
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18bc (6332)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23ec [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SDCCH/8 (4)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585912
    Channel Type: SDCCH/8 (8)
    Antenna Number: 19
    Sub-Slot: 4
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x01
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..0. = C/R: 0
        .... ...1 = EA: Final octet (1)
    Control field: S, func=RR, N(R)=2 (0x41)
        010. .... = N(R): 2
        .... 00.. = Supervisory frame type: Receiver ready (0x0)
        .... ..01 = Frame type: Supervisory frame (0x1)
    Length Field: 0x01
        0000 00.. = Length: 0
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)

Frame 32: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.769312000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.769312000 seconds
    [Time delta from previous captured frame: 0.045150000 seconds]
    [Time delta from previous displayed frame: 0.045150000 seconds]
    [Time since reference or first frame: 0.326617000 seconds]
    Frame Number: 32
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18c4 (6340)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23e4 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SDCCH/8 (5)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585916
    Channel Type: SDCCH/8 (8)
    Antenna Number: 127
    Sub-Slot: 5
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x01
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..0. = C/R: 0
        .... ...1 = EA: Final octet (1)
    Control field: S, func=RR, N(R)=2 (0x41)
        010. .... = N(R): 2
        .... 00.. = Supervisory frame type: Receiver ready (0x0)
        .... ..01 = Frame type: Supervisory frame (0x1)
    Length Field: 0x01
        0000 00.. = Length: 0
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)

Frame 33: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.773014000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.773014000 seconds
    [Time delta from previous captured frame: 0.003702000 seconds]
    [Time delta from previous displayed frame: 0.003702000 seconds]
    [Time since reference or first frame: 0.330319000 seconds]
    Frame Number: 33
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm:data]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18c5 (6341)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23e3 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 0, Channel: SDCCH/4 (0)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 0
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585918
    Channel Type: SDCCH/4 (7)
    Antenna Number: 115
    Sub-Slot: 0
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x25
        .01. .... = LPD: Cell broadcast service (1)
        ...0 01.. = SAPI: Unknown (1)
        .... ..0. = C/R: 0
        .... ...1 = EA: Final octet (1)
    Control field: I, N(R)=0, N(S)=3 (0x06)
        000. .... = N(R): 0
        .... 011. = N(S): 3
        .... ...0 = Frame type: Information frame (0x0)
    Length Field: 0x21
        0010 00.. = Length: 8
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)
Data (8 bytes)

0000  30 05 f4 42 30 71 5a 2b                           0..B0qZ+
    Data: 3005f44230715a2b
    [Length: 8]

Frame 34: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.777537000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.777537000 seconds
    [Time delta from previous captured frame: 0.004523000 seconds]
    [Time delta from previous displayed frame: 0.004523000 seconds]
    [Time since reference or first frame: 0.334842000 seconds]
    Frame Number: 34
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18c6 (6342)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23e2 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SDCCH/8 (6)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585920
    Channel Type: SDCCH/8 (8)
    Antenna Number: 127
    Sub-Slot: 6
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x01
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..0. = C/R: 0
        .... ...1 = EA: Final octet (1)
    Control field: S, func=RR, N(R)=2 (0x41)
        010. .... = N(R): 2
        .... 00.. = Supervisory frame type: Receiver ready (0x0)
        .... ..01 = Frame type: Supervisory frame (0x1)
    Length Field: 0x01
        0000 00.. = Length: 0
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)

Frame 35: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.781016000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.781016000 seconds
    [Time delta from previous captured frame: 0.003479000 seconds]
    [Time delta from previous displayed frame: 0.003479000 seconds]
    [Time since reference or first frame: 0.338321000 seconds]
    Frame Number: 35
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm:data]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18c7 (6343)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23e1 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 0, Channel: SDCCH/4 (1)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 0
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585922
    Channel Type: SDCCH/4 (7)
    Antenna Number: 228
    Sub-Slot: 1
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x25
        .01. .... = LPD: Cell broadcast service (1)
        ...0 01.. = SAPI: Unknown (1)
        .... ..0. = C/R: 0
        .... ...1 = EA: Final octet (1)
    Control field: I, N(R)=0, N(S)=3 (0x06)
        000. .... = N(R): 0
        .... 011. = N(S): 3
        .... ...0 = Frame type: Information frame (0x0)
    Length Field: 0x21
        0010 00.. = Length: 8
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)
Data (8 bytes)

0000  00 05 f4 c3 88 af d0 23                           .......#
    Data: 0005f4c388afd023
    [Length: 8]

Frame 36: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.786341000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.786341000 seconds
    [Time delta from previous captured frame: 0.005325000 seconds]
    [Time delta from previous displayed frame: 0.005325000 seconds]
    [Time since reference or first frame: 0.343646000 seconds]
    Frame Number: 36
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18c8 (6344)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23e0 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SDCCH/8 (7)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585924
    Channel Type: SDCCH/8 (8)
    Antenna Number: 6
    Sub-Slot: 7
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x03
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..1. = C/R: 1
        .... ...1 = EA: Final octet (1)
    Control field: U, func=UI (0x03)
        000. 00.. = Command: Unnumbered Information (0x00)
        .... ..11 = Frame type: Unnumbered frame (0x3)
    Length Field: 0x01
        0000 00.. = Length: 0
        .... ..0. = M: Last segment (0)
        .... ...1 = EL: Final octet (1)

Frame 37: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.829084000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.829084000 seconds
    [Time delta from previous captured frame: 0.042743000 seconds]
    [Time delta from previous displayed frame: 0.042743000 seconds]
    [Time since reference or first frame: 0.386389000 seconds]
    Frame Number: 37
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18d1 (6353)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23d7 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 0, Channel: SDCCH/4 (2)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 0
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585928
    Channel Type: SDCCH/4 (7)
    Antenna Number: 71
    Sub-Slot: 2
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x2d
        .01. .... = LPD: Cell broadcast service (1)
        ...0 11.. = SAPI: SMS/SS (3)
        .... ..0. = C/R: 0
        .... ...1 = EA: Final octet (1)
    Control field: I, N(R)=0, N(S)=3 (0x06)
        000. .... = N(R): 0
        .... 011. = N(S): 3
        .... ...0 = Frame type: Information frame (0x0)
    Length Field: 0x22
        0010 00.. = Length: 8
        .... ..1. = M: More segments (1)
        .... ...0 = EL: More octets (0)

Frame 38: 81 bytes on wire (648 bits), 81 bytes captured (648 bits)
    Encapsulation type: Ethernet (1)
    Arrival Time: Jul 21, 2020 13:59:13.829600000 PKT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1595321953.829600000 seconds
    [Time delta from previous captured frame: 0.000516000 seconds]
    [Time delta from previous displayed frame: 0.000516000 seconds]
    [Time since reference or first frame: 0.386905000 seconds]
    Frame Number: 38
    Frame Length: 81 bytes (648 bits)
    Capture Length: 81 bytes (648 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ethertype:ip:udp:gsmtap:lapdm:gsm_a.ccch]
Ethernet II, Src: 00:00:00_00:00:00 (00:00:00:00:00:00), Dst: 00:00:00_00:00:00 (00:00:00:00:00:00)
    Destination: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: 00:00:00_00:00:00 (00:00:00:00:00:00)
        Address: 00:00:00_00:00:00 (00:00:00:00:00:00)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 127.0.0.1, Dst: 127.0.0.1
    0100 .... = Version: 4
    .... 0101 = Header Length: 20 bytes (5)
    Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
        0000 00.. = Differentiated Services Codepoint: Default (0)
        .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0)
    Total Length: 67
    Identification: 0x18d2 (6354)
    Flags: 0x4000, Don't fragment
        0... .... .... .... = Reserved bit: Not set
        .1.. .... .... .... = Don't fragment: Set
        ..0. .... .... .... = More fragments: Not set
        ...0 0000 0000 0000 = Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x23d6 [validation disabled]
    [Header checksum status: Unverified]
    Source: 127.0.0.1
    Destination: 127.0.0.1
User Datagram Protocol, Src Port: 56659, Dst Port: 4729
    Source Port: 56659
    Destination Port: 4729
    Length: 47
    Checksum: 0xfe42 [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
GSM TAP Header, ARFCN: 117 (Downlink), TS: 1, Channel: SACCH/8 (0)
    Version: 2
    Header Length: 16 bytes
    Payload Type: GSM Um (MS<->BTS) (1)
    Time Slot: 1
    ..00 0000 0111 0101 = ARFCN: 117
    .0.. .... .... .... = Uplink: 0
    Signal Level (dBm): -41
    Signal/Noise Ratio (dB): 0
    GSM Frame Number: 1585928
    Channel Type: SACCH/8 (136)
    Antenna Number: 109
    Sub-Slot: 0
SACCH L1 Header, Power Level: 5, Timing Advance: 2
    ...0 0101 = MS power level: 5
    .... .1.. = FPC: In use
    Actual Timing Advance: 2
Link Access Procedure, Channel Dm (LAPDm)
    Address Field: 0x03
        .00. .... = LPD: Normal GSM (0)
        ...0 00.. = SAPI: RR/MM/CC (0)
        .... ..1. = C/R: 1
        .... ...1 = EA: Final octet (1)
    Control field: U, func=UI (0x03)
        000. 00.. = Command: Unnumbered Information (0x00)
        .... ..11 = Frame type: Unnumbered frame (0x3)
GSM CCCH - System Information Type 5
    L2 Pseudo Length
        0100 10.. = L2 Pseudo Length value: 18
    .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
        .... 0110 = Protocol discriminator: Radio Resources Management messages (0x6)
        0000 .... = Skip Indicator: No indication of selected PLMN (0)
    Message Type: System Information Type 5
    Neighbour Cell Description - BCCH Frequency List
        ..0. .... = EXT-IND: The information element carries the complete BA (0)
        ...0 .... = BA-IND: 0
        00.. 101. = Format Identifier: Unknown (0x05)
        List of ARFCNs = 124 122 121 120 118 117 116 115 112 111 102 73 71 63 62 58 56 55 54 53 23 22 18 15 6 4 2
I want to print the List of ARFCNs which is available numerous times in the text.
I've used
searchfile = open("grub.txt", "r")
for line in searchfile:
    if "List" in line: print(line)
searchfile.close()
But this prints all the instances where the list of ARFCNs come.
How can I modify the code so that it prints the list only the first time it appears in text and also counts the number of entries in the list?
Reply
#2
(Jul-22-2020, 05:31 AM)buttercup Wrote: I want to print the List of ARFCNs which is available numerous times in the text.

I find it odd that you pasted such a large text segment, but I only see one line with "List of ARFCNs", so when I run your program, I don't really see the problem.

Quote:How can I modify the code so that it prints the list only the first time it appears in text

Once you find the match you want, break out of the loop.

Quote: and also counts the number of entries in the list?

Split the line on =, then for the second part, split it into a list on spaces. You can then keep the entries around and count them with len()
Reply
#3
(Jul-22-2020, 06:45 AM)bowlofred Wrote:
(Jul-22-2020, 05:31 AM)buttercup Wrote: I want to print the List of ARFCNs which is available numerous times in the text.

I find it odd that you pasted such a large text segment, but I only see one line with "List of ARFCNs", so when I run your program, I don't really see the problem.

Quote:How can I modify the code so that it prints the list only the first time it appears in text

Once you find the match you want, break out of the loop.

Quote: and also counts the number of entries in the list?

Split the line on =, then for the second part, split it into a list on spaces. You can then keep the entries around and count them with len()

Im sorry can you give an example on how should I proceed?
Reply
#4
Looks like a good case for a generator.

def count(f):
    for line in f:
        if 'List' in line:
            yield line.replace('\n','')

with open('grub.txt') as f:
    lst = [i for i in count(f)]

print(len(lst)) #gets length of list or number of instances
z = iter(lst)
a = 0
while a <= 1:  #you can change the count here if you want to print more than one iteration
   try:
       print(next(z)) 
       a +=1
   except StopIteration:
       print('end')
       break
Note, the above code and your code will print out all lines with the chars "List" in it. Last I check there were a few lines with "List" in it, but as bowlofred pointed out, there appears to be only one line that you are really after.
Reply
#5
(Jul-22-2020, 09:48 AM)palladium Wrote: Looks like a good case for a generator.

def count(f):
    for line in f:
        if 'List' in line:
            yield line.replace('\n','')

with open('grub.txt') as f:
    lst = [i for i in count(f)]

print(len(lst)) #gets length of list or number of instances
z = iter(lst)
a = 0
while a <= 1:  #you can change the count here if you want to print more than one iteration
   try:
       print(next(z)) 
       a +=1
   except StopIteration:
       print('end')
       break
Note, the above code and your code will print out all lines with the chars "List" in it. Last I check there were a few lines with "List" in it, but as bowlofred pointed out, there appears to be only one line that you are really after.
Thanks alot. The code works like magic except that it prints out two iterations instead of one :/
Reply
#6
Oops. Line 12 has an error, should read:

while a < 1:
If you read up on iterators and generators, it should be easy for you to spot this.
Reply


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