bash - Executing A complex Shell command read as String from a File in Python -


i have configuration file user can specify set of shell commands. commands chain of pipe-separated shell commands.

cmd1 = grep "someotherstring" | grep "xx" | cut -d":" -f9 | cut -d"," -f1  cmd2 = grep "someotherstring" | tail -1| cut -d":" -f9 | cut -d"," -f1 | cut -d"[" -f2 | cut -d"]" -f1

i able read commands in python scripts. question how able run these read command strings in python , output.

any solution subprocess, plumbum, sh acceptable.

use subprocess.check_output()

output = subprocess.check_output(output)

something aware of unlike other subprocess commands, subprocess.calledprocesserror raised if non-zero error code returned.

you shouldn't need this, in case comes in handy out there, did run experience once reason above solution did not work, , so, instead, did following.

    stdout_fh = io.stringio()     stderr_fh = io.stringio()     redirect_stderr(stderr_fh):         redirect_stdout(stdout_fh):             subprocess.run(command, shell=true)     stderr = stderr_fh.getvalue()     stdout = stderr_fh.getvalue()

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