Passing a variable into bash command using python [duplicate]

Question

I'm creating a small script and I'd like to pass a varable into a bash command using the python programming language, so for example:

number = raw_input("digit: ")

then i'd like to take the number variable and put it in bash command so for example:

ssh 'foo%s.bar'(number) <- where the %s is located id like it be replaced with the input

Finally I'd like to take that and run it in a bash command still within the python script:

ssh foo45.bar

How can I make this work?

John1024 · Accepted Answer · 2014-08-13 01:57:22Z

2

import subprocess
number = raw_input("digit: ")
subprocess.call(('ssh', 'foo{}.bar'.format(number)))

For some good reading, try the python docs for string formatting and for subprocess.

If you want to integrate the above with sshpass, replace the subprocess call with:

subprocess.call(('sshpass', '-p', 'YOUR_PASSWORD', 'ssh', '-o', 'StrictHostKeyChecking=no', 'foo{}.bar'.format(number)))

edited Aug 13, 2014 at 1:57

answered Aug 13, 2014 at 0:48

John1024

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4 Comments

John1024 Over a year ago

@secure_20 Did this answer your question? Or, was there other information that you were looking for?

secure_20 Over a year ago

it kinda answered my question but it's asking me to enter password. I'd like that to be passed in automatically as well @John1024

John1024 Over a year ago

That question has been asked elsewhere on Stackoverflow: see Automatically Enter SSH Password With Script.

John1024 Over a year ago

@secure_20 I just updated the answer with info for the sshpass solution. If you can use public key authentication (as described in diegows' answer to that question, then I would recommend that instead.

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