python3 os.system() fails with error sh: 2: Syntax error: "|" unexpected

Question

I am trying to run this using python3 system('echo %s|sudo -S %s' % (password, "date > " + file_path))

but getting this as error sh: 2: Syntax error: "|" unexpected

subprocess.Popen('echo %s|sudo -S %s' % (password, "date > " + file_path),stdin=subprocess.PIPE, shell=True) — Prabhakar Jha
– Prabhakar Jha, Commented Jan 7, 2018 at 9:02

Alvaro Silvino · Accepted Answer · 2018-01-07 09:07:32Z

1

A possibly unrelated problem is that you aren't properly quoting the input and output the variables in the command.

system('echo "%s"|sudo -S "%s"' % (password, "date > " + file_path))

However, for all legal filenames as filenames. I would recommend using the subprocess module instead of os.system, leaving the shell out of the process altogether:

subprocess.Popen('echo %s|sudo -S %s' % (password, "date > " + file_path), stdout=subprocess.PIPE)

answered Jan 7, 2018 at 9:07

Alvaro Silvino

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