executing a bash file - revisited

[ebolisa]

Hi,

I'm trying to execute the line below from a .py file but I get an error: File not found.
However, if I execute it directly as sh restartMM.sh, it executes with no errors.

What am I doing wrong?

TIA

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#sub.call("sh /home/pi/MagicMirror/restartMM.sh", shell=True) # same results p = sub.run("sh /home/pi/MagicMirror/restartMM.sh") print(p.returncode)

[Serafim]

First I assume that you have started your program with

1	import subprocess as sub

If not, the code makes no sense.

Even so, you try to invoke a shellscript, but that is not the intended use for subprocess. It is meant to start a process and one of the arguments may be a file. Your call makes subprocess try to interpret the argument as a file named "sh /home/pi/MagicMirror/restartMM.sh". If you take away "sh " it will complain about file permissions unless you have made it executable. Another way is:

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import os p = os.system("sh /home/pi/MagicMirror/restartMM.sh") print(p)

[BashBedlam]

Try it like this :

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from subprocess import Popen   p = Popen ('/home/pi/MagicMirror/restartMM.sh', shell = True) code = p.wait ()   print (p.returncode)

[ebolisa]

Thank you.

Actually, all the options in code shown below work within the MagicMirror directory but, they fail when executed from outside of it like in /home/pi.

-rwxr-xr-x 1 pi pi 58 Feb 9 18:32 restartMM.sh

ERROR:
FileNotFoundError: [Errno 2] No such file or directory: 'sh /home/pi/MagicMirror/restartMM.sh': 'sh /home/pi/MagicMirror/restartMM.sh'

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#!/usr/bin/python3   import time import os import subprocess as sub   os.system('sh /home/pi/MagicMirror/restartMM.sh') time.sleep(10)   #sub.call("sh /home/pi/MagicMirror/restartMM.sh", shell=True) #time.sleep(10)   #p = sub.run("sh /home/pi/MagicMirror/restartMM.sh") #print (p) #time.sleep(10)   #p = sub.Popen ('/home/pi/MagicMirror/restartMM.sh', shell = True) #code = p.wait() #print (p.returncode)

[BashBedlam]

On MY Raspberry Pi 4B everything in the above code works correctly except :

1	p = sub.run("sh /home/pi/MagicMirror/restartMM.sh")

Sorry I can't help, but it seems that it's not python that's creating the issue.

[ebolisa]

On MY Raspberry Pi 4B everything in the above code works correctly except :

1	p = sub.run("sh /home/pi/MagicMirror/restartMM.sh")

Sorry I can't help, but it seems that it's not python that's creating the issue.

Ok, I agree. In fact, I did say the code works but, have executed it from a different folder?

[BashBedlam]

Ok, I agree. In fact, I did say the code works but, have executed it from a different folder?

I tested the code running from several different folders :
/home/
/home/pi/
/home/pi/Python/
/home/pi/MagicMirror/
From IDE, Vim and terminal. All worked the same.

[Gribouillis]

Try

1 2	import subprocess as sub sub.call(["sh", "/home/pi/MagicMirror/restartMM.sh"])