TLDR
Enter a command. For example: pppd, pdfjam, xz, svgcleaner, zola.

autossh

 
Run, monitor and restart SSH connections. Auto-reconnects to keep port forwarding tunnels up. Accepts all ssh flags. More information: https://www.harding.motd.ca/autossh.
 
  • Start an SSH session, restarting when a monitoring port fails to return data:
     
    autossh -M {{monitor_port}} "{{ssh_command}}"
     
  • Forward a local port to a remote one, restarting when necessary:
     
    autossh -M {{monitor_port}} -L {{local_port}}:localhost:{{remote_port}} {{user}}@{{host}}
     
  • Fork autossh into the background before executing ssh and don't open a remote shell:
     
    autossh -f -M {{monitor_port}} -N "{{ssh_command}}"
     
  • Run in the background, with no monitoring port, and instead send SSH keep-alive packets every 10 seconds to detect failure:
     
    autossh -f -M 0 -N -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" "{{ssh_command}}"
     
  • Run in the background, with no monitoring port and no remote shell, exiting if the port forward fails:
     
    autossh -f -M 0 -N -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" -o ExitOnForwardFailure=yes -L {{local_port}}:localhost:{{remote_port}} {{user}}@{{host}}
     
  • Run in the background, logging autossh debug output and ssh verbose output to files:
     
    AUTOSSH_DEBUG=1 AUTOSSH_LOGFILE={{path/to/autossh_log_file.log}} autossh -f -M {{monitor_port}} -v -E {{path/to/ssh_log_file.log}} {{ssh_command}}

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