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I would like my script to connect to ssh with password, and once connected it will switch to sudo -s and run the mkdir command

for the moment I manage to connect to ssh without entering the password but I cannot do it user switch to create my folder

Look's like:

root@computer:/home/user/test# sshpass -p 'password' ssh admin@192.168.2.250  mkdir /var/volatile/flash-upgrade

mkdir: can't create directory '/var/volatile/flash-upgrade': Permission denied

only root user can create folder

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  • 1) sudo command is missing after ssh 2) is it always same host and `mkdir' (with random dir ? random hosts ? ramdom users (not always admin) ? – Archemar Feb 5 at 11:28
  • Can you ssh as the user who has the permission to write the command? Can you set up the remote host to allow admin to run sudo mkdir /var/volatile/flash-upgrade without a password (do you own the remote system and can you edit its /etc/sudoers file)? How important is security? Is having plaintext passwords in the shell's history a problem or are you the only user of the system? – terdon Feb 5 at 11:30
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Either your admin user on 192.168.2.250 needs to be able to sudo to the correct user, for example ssh sudo id or you could set-up ssh-ing to a user that is allowed root access to the machine, so ssh root@192.168.2.250.

If you're alone on your home network, both should be OK; in a corporate environment, you should look at the security implications.

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you can allow root access only with tagged ssh public key aithentication : in /etc/ssh/sshd_config, set PermitRootLogin forced-command-only Force-command is a command you tag public key in /root/.ssh/authorized_keys such as command="script_you_have_strictly_controlled" id-rsa <public key here> This way you have a controlled elevation to do only authorized and predefined tasks

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