Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!goblin1!goblin.stu.neva.ru!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:: [': 0.03; 'argument': 0.04; 'skip:/ 10': 0.07; 'subject:How': 0.09; 'python': 0.09; 'grep': 0.09; 'subject:command': 0.09; 'cc:addr :python-list': 0.10; 'subject:python': 0.11; '0.6': 0.16; 'aux': 0.16; 'echo': 0.16; 'shell:': 0.16; 'subject:Tutor': 0.16; 'subject:run': 0.16; 'wrote:': 0.17; 'specify': 0.17; 'thu,': 0.17; 'accepting': 0.18; 'jan': 0.18; 'shell': 0.18; '>>>': 0.18; 'input': 0.18; 'subject:] ': 0.19; 'skip:p 30': 0.20; 'variable': 0.20; 'email addr:gmail.com>': 0.20; 'all,': 0.21; 'cc:no real name:2**0': 0.24; 'cc:2**1': 0.24; 'command': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'am,': 0.27; 'message-id:@mail.gmail.com': 0.27; 'lines': 0.28; 'run': 0.28; 'multiline': 0.29; 'skip:& 10': 0.29; 'code': 0.31; 'file': 0.32; 'skip:s 30': 0.33; 'skip:& 20': 0.33; 'received:google.com': 0.34; 'skip:* 20': 0.35; 'received:209.85': 0.35; 'but': 0.36; 'anything': 0.36; 'skip:p 20': 0.36; 'execute': 0.37; 'received:209': 0.37; 'possible.': 0.38; 'several': 0.39; 'received:209.85.214': 0.39; 'header:Received:5': 0.40; 'skip:\xc2 10': 0.62; 'within': 0.64; 'making': 0.64; 'dangerous': 0.66; 'directly.': 0.78; '2013': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; bh=ob+Ymsbf+P1TuC+Pc9RYcpX0t8D6tdJNe4DqLFCf6w0=; b=c1RXF3Hdb2AtiqrbLcy5zbmBCiVkjZaGdPBmiQvhIVQs3vIVXnYX6GJTGmABdLKhms i6O7/S+/TYilc9nzxJhqBWpFn5FFVMsn+9718t4SxKN8dTxcocMiRBSgOEs9meq1oYF0 zBztsCB0vnh/V+WSMEQdpN4Jrp0ezBs2m/byIjY0GHXNIe4Vhsd0sWmNjLLXD53aY2Rh Hz9LzjXp6QwfPNwxwDBAscjV4ewCEyKwwO3jef82UScXN8v05wwcZlj/vhGPkLKhNlBw pxbfieUvSbQL1QRSGOt/Ic+SffCATNCst01oI3sKiaq8N5lD2wRWrpRbrDjE8ytXObid O0kw== MIME-Version: 1.0 In-Reply-To: <50EE5934.7090609@gmail.com> References: <50EE5934.7090609@gmail.com> From: Hugo Arts Date: Thu, 10 Jan 2013 09:31:43 +0100 Subject: Re: [Tutor] How to run multiline shell command within python To: Karim Content-Type: multipart/alternative; boundary=00151761ca5810a95c04d2eb049a Cc: python-list@python.org, *tutor python X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 83 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1357806741 news.xs4all.nl 6934 [2001:888:2000:d::a6]:46350 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:36566 --00151761ca5810a95c04d2eb049a Content-Type: text/plain; charset=UTF-8 On Thu, Jan 10, 2013 at 7:01 AM, Karim 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 --00151761ca5810a95c04d2eb049a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Thu, Jan 10, 2013 at 7:01 AM, Karim &= lt;kliateni@gmail.c= om> 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<= br> shell lines of code directly.


Yes, this is very possible. Spec= ify shell=3DTrue as an argument and you can do anything you can do in a she= ll:

=C2=A0>>> commands =3D &q= uot;""echo hello
... echo hello | wc -l
... ps aux | grep python""&= quot;
>>> b =3D subprocess.check_output(commands, shell= =3DTrue)
>>> print(b.decode('ascii'))
hello
1
hugo =C2=A0 =C2=A0 =C2=A01255 =C2=A01.0 =C2=A00.6 777316 4= 9924 ? =C2=A0 =C2=A0 =C2=A0 =C2=A0Sl =C2=A0 09:14 =C2=A0 0:08 /usr/bin/pyth= on2 /usr/bi
hugo =C2=A0 =C2=A0 =C2=A06529 =C2=A00.0 =C2=A00.0 =C2= =A042408 =C2=A07196 pts/0 =C2=A0 =C2=A0S+ =C2=A0 09:23 =C2=A0 0:00 python
hugo =C2=A0 =C2=A0 =C2=A06559 =C2=A00.0 =C2=A00.0 =C2=A010656 =C2= =A01128 pts/0 =C2=A0 =C2=A0S+ =C2=A0 09:28 =C2=A0 0:00 grep python

>>>=C2=A0

watch= out though, accepting user input into the commands variable will lead to s= hell injection, which can be a dangerous security vulnerability.

HTH,
Hugo
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