Read each line, replace string and save into a new file

Read each line, replace string and save into a new file - Printable Version

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Read each line, replace string and save into a new file - igormonteiro - Sep-15-2019

I want to replace a string based on each line of list.txt and create a new file with the name of the string collected.

*Content of list.txt*

Output:new_server
new_server2
new_server3

*Content of zabbix_agentd.conf*

Output:
Hostname=server

fin = open("zabbix_agentd.conf", "rt")
fout = open(new_server_string_collected, "wt")

for line in fin:#
	fout.write(line.replace('Hostname=server', 'Hostname=new_server'))
	
fin.close()
fout.close()

fh = open('list.txt')
while True:
    line = fh.readline()
    print(line)
    if not line:
        break
fh.close()

*Results expected*

1. python sample.py
2. file created: new_server
3. cat new_server

Output:
Hostname=new_server

RE: Read each line, replace string and save into a new file - Axel_Erfurt - Sep-15-2019

you want replace one word only?

fin = open("zabbix_agentd.conf", "r")
fout = open(new_server_string_collected, "w")
 
str_in = fin.read()
fin.close()
str_out = str_in.replace('Hostname=server', 'Hostname=new_server')
fout.write(str_out)
fout.close()

RE: Read each line, replace string and save into a new file - buran - Sep-15-2019

something within these lines

zabix_config = 'zabbix_agentd.conf'
server_list = 'list.txt'

with open(zabix_config) as zbx:
    zbx_config = zbx.read() # read full config file content

with open(server_list) as f:
    for line in f:
        line =  line.strip() # remove the new line ending
        with open(f'{line}') as out_f:
            new_zbx = zbx_config.replace('Hostname=server', f'Hostname={line}')
            out_f.write(new_zbx)