[Tutor] How to run multiline shell command within python
Karim
kliateni at gmail.com
Thu Jan 10 09:25:57 EST 2013
On 10/01/2013 09:31, Hugo Arts wrote:
> On Thu, Jan 10, 2013 at 7:01 AM, Karim <kliateni at gmail.com
> <mailto:kliateni at gmail.com>> wrote:
>
>
>
> Hello all,
>
> I want to run multiline shell command within python without using
> a command file but directly execute several lines of shell.
> I already use *subprocess.checkoutput("csh -f
> my_file.csh".split())* but I want to know if it is posssible to
> avoid making file and execute
> shell lines of code directly.
>
>
> Yes, this is very possible. Specify shell=True as an argument and you
> can do anything you can do in a shell:
>
> >>> commands = """echo hello
> ... echo hello | wc -l
> ... ps aux | grep python"""
> >>> b = subprocess.check_output(commands, shell=True)
> >>> print(b.decode('ascii'))
> hello
> 1
> hugo 1255 1.0 0.6 777316 49924 ? Sl 09:14 0:08
> /usr/bin/python2 /usr/bi
> hugo 6529 0.0 0.0 42408 7196 pts/0 S+ 09:23 0:00 python
> hugo 6559 0.0 0.0 10656 1128 pts/0 S+ 09:28 0:00 grep python
>
> >>>
>
> watch out though, accepting user input into the commands variable will
> lead to shell injection, which can be a dangerous security vulnerability.
>
> HTH,
> Hugo
Many thanks Hugo. It makes my day!
In my case there are no possibilities for shell injection. It is
internal to a class.
Regards
Karim
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20130110/4a078be8/attachment.html>
More information about the Python-list
mailing list