Introduction Overview Essentials Tools Shell prompt and commands    Environment variables Input and output redirect GREP and REGEX Remote using SSH Switch users in multiuser targets Archiving Editor Vim Files and directories Create hard and soft links Standard permissions System documentation Shell Scripting Conditionally execute code Looping Process script inputs Shell commands within a script Shell command exit codes Shut down a system Systems and storages Boot systems into different targe Interrupt the boot process Identify CPU/memory intensive pro Adjust process scheduling Manage tuning profiles Locate and interpret system log f Preserve system journals Network services Securely transfer files Partitions on MBR and GPT disks Physical volumes Physical volumes to volume groups Logical volumes Mount file systems Partitions and logical volumes, a vfat, ext4 and xfs file NFS and CIFS Extend logical volumes set-GID directories Disk compression Manage layered storage File permission problems Deploy and maintain systems Schedule tasks configure service Boot into a specific target autom Configure time service clients Install and update software packa Package Module Streams Modify the system bootloader Networks Users Security Containers Conclusions