High Performance Linux System Administration Training Course

Learn the terminal environment, file systems, kernel, processes and daemons, security, accounts and root, boot cycle, logs, and practical strategies for recovery and reinstall as you begin Linux system administration.

Explore the history of Unix and Linux, from Bell Labs origins to Linus Torvalds' Linux kernel, highlighting multitasking, security, userspace and kernel space, and internet milestones.

Explore terminal emulators and the Bash shell, and see how the prompt shows your user, host, and home directory, including login vs non-login shells.

Navigate the Linux directory tree from the terminal, understanding directories, root, volumes, including mounting a floppy to /media, and the inode table with permissions and hard links.

Learn to navigate the Linux directory tree with ls and cd, using -l and -h to view file types, permissions, and dates, and distinguish symbolic and hard links and inodes.

Explore Linux shortcuts with cd, tilde, and period to navigate the directory tree. Master basic file manipulation—create, edit, copy, move, view, and delete—using the terminal.

Create and edit files in the terminal with touch and nano, manage buffers, save changes, and perform basic file linking, copying, and renaming.

Learn how pipes and redirects connect standard in, standard out, and standard error to other programs or files, forming pipelines, and practice regex basics for text processing.

Master regular expressions in Linux by learning character sets, groups, anchors, and replacements, and apply extended regex patterns in nano, scripts, and programs.

Explore grep for locating patterns across files, with recursive search and extended regex options. Master sed for substitution, using s, capturing groups, and flags such as -r, -n, and -p.

Discover how bash searches for commands using PATH and environment variables, and how sudo and su manage root privileges and permissions in Linux.

Understand how the Linux directory tree blends real and virtual file systems, how df -h reveals mounted space, and how to mount and unmount file systems with mount points.

Explore partitions and partition tables, including MBR and GPT, and learn to use the parted tool to create and manage volumes on BIOS and UEFI systems.

Explore partitioning with GPT and MBR, create fat32 file systems, and mount partitions. Build and manage logical volumes with PV, VG, and LV.

Learn to create, extend, shrink, and move logical volumes between physical volumes within volume groups; resize file systems safely and manage fstab entries and mounting basics.

Understand the fstab file, mount options, and fsck order, including noexec, nosuid, nodev, and ro/rw settings, UUID usage, and testing with mount -a and reboot root filesystem.

Learn how the linux kernel manages processes and threads, including process lifecycles, daemons, memory, cpu scheduling, and the proc interface.

Learn to manage processes with ps and signals, including sig hup, sig int, sig quit, sig term, and sig kill, and examine daemons like mpd from init to systemd.

Explore virtual memory as an abstraction that lets disk storage supplement RAM, detailing page life cycles, paging, swap files, and monitoring tools like vmstat and top for Linux systems.

Expand your Linux system's virtual memory by adding a swap partition or swap file, then tune the virtual memory system with vm sloppiness and note default values.

Master the Linux file security model: owner, group, and world permissions on inodes, with chmod, chown, and chgrp to control read, write, and execute access.

Explore setuid and the sticky bit, showing how a file runs with the owner's privileges. See how the effective UID and suid copy the owner's ID to the process.

Discover how access control lists enable fine-grained file permissions using setfacl and getfacl to grant or revoke user and group rights, with examples including RJ.

Learn to build a Linux user account by hand, detailing account anatomy in /etc/passwd and /etc/shadow, plus group, home directory, shell, password settings, and manual file creation.

Explore the meaning and scope of root in Linux: the root account, root privileges, the root directory, and how all processes originate from root, including root shells and single-user mode.

Master the Linux boot cycle from BIOS to kernel and systemd, and read and manage boot logs with dmesg and log files.

Trace the Linux boot path from hardware to the boot volume, use rescue mode and fsck, and diagnose hangs by checking power, RAM, and lm-sensors.

Diagnose a nonfunctional gui on linux by checking boot, login prompts, terminal access, then review display manager, x.org, grub, driver issues, and fsck-based recovery.

decide when to reinstall a linux system by evaluating backups, boot volume failures, and upgrade history. move home to its own file system and reinstall with preserved data.

Master the shutdown command with flags for reboot, halt, fsck, timing, and messages, and review Linux fundamentals from terminal tools to the everything-is-a-file principle.