Execute command on remote machine as different user via SSH

To execute command on remote machine as different user via SSH, you may need to run the below command

ssh -t user@host sudo -u<other_user_name> sh -c /path/to/script.sh

In our example, we are executing the script.sh as root after login to the server as testuser

ssh -t testuser@162.23.45.67 sudo -uroot sh -c /home/testuser/script.sh

If you are trying to execute a command to action a file on remote machine as a different user, you need to run the below command,

ssh -t user@host sudo -u<other_user_name> sh -c 'command /path/to/file'

In our example, we are executing the script.sh as root after login to the server as testuser

ssh -t user@host sudo -u<other_user_name> sh -c 'cat /path/to/file'

If you wish to reboot a remote server as a different user, please execute,

ssh -t testuser@162.23.45.67 sudo -uroot sh -c 'reboot'

To execute multiple commands via SSH, please execute,

ssh user@host << EOF
command1
command2
command3
EOF

Example script below,

ssh testuser@162.23.45.67 << EOF
uname -a
cat /proc/cpuinfo
free -m
EOF