Scheduling recurring jobs and avoiding the classic cron pitfalls.
Prerequisites
Cron & systemd Timers: Scheduling Jobs in Linux
Crontab syntax, special strings, run-parts directories, and modern systemd timer units — with a direct comparison of when to use each.
Linux Interview Questions & Answers
Real questions asked in Linux SysAdmin, DevOps, and RHCSA-track interviews — filesystem, permissions, systemd, networking, storage, and troubleshooting.
Linux Fundamentals
Core concepts: the shell, commands, filesystem hierarchy, and how distributions differ.
Filesystem
The FHS layout, mount points, inodes, and navigating the filesystem like an administrator.