How i can use variable present in python program inside the execute command function of linux

Question

import paramiko
client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.WarningPolicy())
client.connect('example.com',22,'XXXXX','XXXX')
a=input ("enter the file path")
stdin,stdout,stderr=client.exec_command('cd a && pwd')

I want to pass the variable 'a' to the exec_command .. I am trying to get the file path from the user and i am storing it in a variable a, i want to know how i can pass the variable a to the Cd command under exec_command function

Daniel · Accepted Answer · 2019-04-07 11:50:12Z

1

Since there can be some security flaws by code injection, you must not format user input directly into shell commands.

Here you can use environment variables:

stdin,stdout,stderr=client.exec_command('cd "$a" && pwd', environment={'a': a})

answered Apr 7, 2019 at 11:50

Daniel

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Comments

rdas · Accepted Answer · 2019-04-07 11:39:47Z

0

Did you try constructing the command from the variable?

stdin,stdout,stderr=client.exec_command('cd ' + str(a) + '&& pwd')

answered Apr 7, 2019 at 11:39

rdas

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2 Comments

Mithun Raj Over a year ago

thnks .. Let me try that

Kevin McKenzie Over a year ago

This has the potential to be incredibly dangerous.

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