Linux Foundations - Log Searcher

In a browser-delivered Ubuntu 22.04 desktop hosted in the WWT ATC, learners explore the Linux logging system in /var/log. They identify the common system logs (syslog, auth.log, kern.log, and others), view recent entries with tail (including real-time following with tail -f), page through files with less, and then search log content with grep using flags like -i, -n, -v, -c, and -r — combining tools with pipes to investigate real activity.

• Locate Linux log files in /var/log, identify what the common logs (syslog, auth.log, kern.log, dpkg.log, boot.log) contain, and understand how log rotation works.
• View and navigate log content using tail (including -n and real-time -f) and the less interactive pager.
• Search logs with grep using key flags (-i, -n, -v, -c, -r) and combine commands with pipes to filter and investigate system activity.

1 x Ubuntu 22.04 VM