Worked on enhancing the Sergeydigl3/zapret-discord-youtube-linux repository by focusing on improving script portability and reliability. Refactored multiple Bash scripts to standardize shebang lines using '/usr/bin/env bash', ensuring consistent execution across diverse environments such as Linux, macOS, and containers. Updated script execution paths to invoke Bash through environment lookups, addressing compatibility issues caused by varying shell locations. This approach improved maintainability and reduced runtime failures related to shell path discrepancies. Leveraged skills in bash scripting, shell scripting, and system administration to align the project with best practices, facilitating smoother onboarding and automation in POSIX-based development and deployment workflows.