Message 217136 - Python tracker

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Author	akira
Recipients	akira, docs@python
Date	2014-04-24.19:08:42
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1398366522.65.0.954174735085.issue21347@psf.upfronthosting.co.za>
In-reply-to

Content
Popen(["something"], shell=True) works but it is similar to Popen(["something", "arg"], shell=True) that passes "arg" to /bin/sh on POSIX systems instead of "something". It is best to always use a string if `shell=True` is necessary. It is a common confusion #20344, msg98732, #7839 http://stackoverflow.com/questions/21029154/understanding-python-subprocess-check-outputs-first-argument-and-shell-true http://stackoverflow.com/questions/20787712/start-openoffice-process-with-python-to-use-with-pyuno-using-subprocess http://stackoverflow.com/questions/17880847/python-subprocess-error-in-using-cp http://stackoverflow.com/questions/17226912/why-does-simple-echo-in-subprocess-not-working http://stackoverflow.com/questions/15109665/subprocess-call-using-string-vs-using-list http://stackoverflow.com/questions/20128114/pythons-subprocess-does-not-interpret-as-expected-on-cygwin http://stackoverflow.com/questions/16840427/python-on-linux-subprocess-popen-works-weird-with-shell-true ...

*Popen(["something"], shell=True)* works but it is similar to
*Popen(["something", "arg"], shell=True)* that passes "arg" to /bin/sh on POSIX systems instead of "something".

It is best to always use a string if `shell=True` is necessary.

It is a common confusion #20344, msg98732, #7839

http://stackoverflow.com/questions/21029154/understanding-python-subprocess-check-outputs-first-argument-and-shell-true
http://stackoverflow.com/questions/20787712/start-openoffice-process-with-python-to-use-with-pyuno-using-subprocess
http://stackoverflow.com/questions/17880847/python-subprocess-error-in-using-cp
http://stackoverflow.com/questions/17226912/why-does-simple-echo-in-subprocess-not-working
http://stackoverflow.com/questions/15109665/subprocess-call-using-string-vs-using-list
http://stackoverflow.com/questions/20128114/pythons-subprocess-does-not-interpret-as-expected-on-cygwin
http://stackoverflow.com/questions/16840427/python-on-linux-subprocess-popen-works-weird-with-shell-true
...

History
Date	User	Action	Args
2014-04-24 19:08:42	akira	set	recipients: + akira, docs@python
2014-04-24 19:08:42	akira	set	messageid: <1398366522.65.0.954174735085.issue21347@psf.upfronthosting.co.za>
2014-04-24 19:08:42	akira	link	issue21347 messages
2014-04-24 19:08:42	akira	create