subprocess.call() arguments ignored when using shell=True w/ list [duplicate]

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When shell is True, the first argument is appended to ["/bin/sh", "-c"]. If that argument is a list, the resulting list is

["/bin/sh", "-c", "ls", "-al"]

That is, only ls, not ls -al is used as the argument to the -c option. -al is used as the first argument the shell itself, not ls.

When using shell=True, you generally just want to pass a single string and let the shell split it according the shell’s normal word-splitting rules.

# Produces ["/bin/sh", "-c", "ls -al"]
subprocess.call("ls -al", shell=True)

In your case, it doesn’t see like you need to use shell=True at all.

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