Package Hold and Audit

Roll back and pin a package version after an upgrade broke production config.

A intermediate Linux challenge worth 10 points. Solve it hands-on in a real Linux environment in your browser - no local setup, no fake shells.

The Challenge

After a routine apt upgrade, nginx changed version and a config directive broke the site. Roll back, pin the version, and prevent future auto-upgrades.

Your tasks:

• Check current version: nginx -v and dpkg -l nginx
• List available versions: apt-cache showpkg nginx
• Hold the package: apt-mark hold nginx
• Verify the hold: apt-mark showhold
• Write the held version string to /tmp/held_version.txt
• Run check to validate