Worked on the mother-of-all-self-hosting/mash-playbook repository to address a stability issue affecting automation reliability. Focused on Shell scripting, the developer identified and resolved a bug in the Justfile where incorrect single-bracket syntax was used for flag evaluation. By updating the script to use double-bracket syntax, they ensured accurate handling of the 'flags' variable, reducing deployment risk and preventing automation failures. The solution involved careful debugging and validation within the repository, demonstrating proficiency in Shell and automation workflows. This targeted fix restored dependable flag-driven automation, reflecting a methodical approach to troubleshooting and maintaining robust deployment scripts in Bash environments.