Jumpssh exécuter plusieurs commandes

#If you wish each command to have an effect on the next command you should use:

	stdin, stdout, stderr = client.exec_command("command1;command2;command3")
    
#but in some cases, I found that when ";" doesn't work, using "&&" does work.

	stdin, stdout, stderr = client.exec_command("command1 && command2 && command3")
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