Add “Sudo” user If somehow you Lost a “sudo” user which happened to me today, after upgrading Ubuntu, you can recover the sudo used by following below commands, switch to root user, $ su root Password: # adduser username sudo # reboot Now, after successful reboot, you should have a “sudo” user as your “username”

Execution & Command Syntax

Terminalbash
sudo used by following below commands, switch to root user, $ su root Password: # adduser username sudo # reboot Now, after successful reboot, you should have a “sudo” user as your “username”

Risk level: caution. Review the command before running it.

Gotchas and Common Issues

  • Permission Verification - confirm execution permissions and path variables before invoking system binaries.

  • Version Compatibility - check software version release notes for deprecated flags or syntax changes.

  • Log Monitoring - inspect system logs (journalctl or /var/log) to troubleshoot execution failures.

Following these steps ensures clean configuration, proper security boundaries, and reliable execution for fix : lost sudo user in linux.