Learn how to change timezone in Linux server. Understand timezone files location, configuration files and way to change timezone using them.
Learn how to setup domain name in RedHat, Ubuntu, CentOS, Fedora like Linux servers. Also see how to verify domain name in Linux and FQDN setup in Linux
Beginners guide on how to configure nameserver in Red Hat, CentOs, Fedora, Debian, Ubuntu or Suse Linux to resolve DNS queries.
Learn 5 different ways to check swap space utilization on Linux server using free, swapon, /proc/swaps, top and vmstat/sar commands.
Learn how to find process using high memory on linux server. This helps in tracking down issues and troubleshooting utilization problems.
Learn how to download package from YUM or APT repository. Standalone package can be used to install on other server which has no YUM or APT configured.
Learn step by step to upgrade package on RHEL system using YUM. Insights of how package upgrade process takes place in background.
Learn how to open file in read only mode under vi or vim editor. Opening read only prevents any accidental edits in file and maintain file integrity.
Understand what is zombie process in Linux Unix, how process goes to zombie state, how to handle zombie process, what is impact of zombie processes.
Learn how to disable direct root access to Linux and HPUX servers by altering parameters in SSH configuration files. Its one of the hardening step.