LPIC-1 Linux Administrator (101-500)

Master the linux shell and command line interface by using the terminal and bash, learning essential commands like ls, cd, and nano, and editing text.

Explore Linux process management through ps and top to monitor CPU and memory, then use fg, bg, and jobs to multitask, or manage services with systemctl.

Explains execution priorities in Linux and how to control them with the nice and renice commands. Learn to monitor with top, identify PIDs, and terminate with kill or kill all.

learn to edit text files quickly with Nano, a user-friendly Linux text editor, by opening, editing, saving, and cutting and pasting, noting its default editor role on Debian and Ubuntu.

Master search and replace in nano, performing bulk edits with Ctrl+W, Ctrl+backslash, Alt+R, and Alt+W. Learn practical uses like updating config values and the need for backups.

Learn to edit Linux text files with vi and vim, including opening, inserting, saving, and exiting, plus basic navigation and copy and paste.

Practice searching and replacing text in vi, using forward slash searches, colon substitutions, and optional line-range edits, then reload or quit to discard changes.

Master bash customization by editing .bashrc, profile and profile.d files to adjust the path, variables, and aliases. Create powerful commands with functions and tailor the prompt.

Master Linux file management in LPIC-1: Managing files, using ls, cat, and less to view contents, and mv, cp, rm, mkdir, and rmdir to move, copy, and delete.

Learn how to redirect data with pipes by sending command output to another command, use piping for filtering with grep and viewing with less, and handle non-pipeable commands with xargs.

Explore redirects versus pipes and learn to send command output to log files or /dev/null, with options to append and redirect errors.

Rearrange terminal output with sort and cut, using translate to clean data and delimiters to extract fields for focused reports like disk usage and file listings.

Learn how grep uses fixed strings and regular expressions to filter command output and files. See examples with Halloween and Christmas, SDA patterns, and anchors for line start and end.

Generate and test checksums with md5sum, sha256sum, and sha512sum. Verify downloads to prevent tampering and corruption.

Learn to locate binaries with which, whereis, and locate, understanding path searches, database updates, and when to use type and find for exhaustive results.

Locate files across the system with the find utility, searching by name, size, permissions, and ownership, using -name, -size, -perm, -maxdepth, and wildcards.

Learn to locate files by their contents using grep, with recursive searches across directories, regular expressions, and practical uses such as e-discovery with case-insensitive or inverted matches.

Learn to differentiate hard and symbolic links, use the ln command to create them for files and directories, and understand practical use cases like simplifying long paths and backward compatibility.

Identify file owner and group with ls -l, learn to change ownership or group with chown and chgrp, and use the sticky bit to control new file ownership.

Learn POSIX based file permissions, view them with ls -l, and modify using chmod with u, g, o and rwx, plus a quick look at umask and defaults.

Master how access control lists overcome POSIX limits by assigning distinct permissions to users and groups, and use getfacl and setfacl for files, directories, defaults, and inheritance.

Explore shared libraries in Linux, their purpose, and how to view and manage them. Discover where they live, use ldconfig and ldd, and add custom libraries in your home directory.

Learn to install, update, and remove software on Debian-based systems using dpkg, apt-get, and apt; manage repositories and dependencies via sources.list and apt commands.

Learn to install, update, and remove software on Red Hat systems using rpm, yum, and dnf. Explore repositories, dependency handling, and adding third-party repositories for applications like Google Chrome.

Identify the three main Linux init systems—sysv init, upstart, and systemd—and learn to determine which one your system runs, using systemctl or inspecting /sbin/init.

Explore how SysVinit loads the kernel, uses rc.d scripts, rc.sysinit, and rc.local; manages run levels via inittab and init or telinit to switch GUI and console.

Learn to manage services with SysVinit without editing scripts, using check config to enable or disable at boot and the service command to start, stop, or restart on demand.

Explore systemd basics, including where config files live in /lib/systemd/system and /etc/systemd/system, and how targets, units, and services enable fast, reliable boot via systemctl.

Learn to manage Linux services with systemd, enable services to start at boot, start/stop/restart and monitor status, and create custom service units linked to the multi-user target.

Discover how to create partitions with fdisk and gdisk, choose between MBR and GPT, and apply primary and extended partition concepts to protect system data and enable quotas.

Learn to create and manage partitions with the GNU parted utility, including selecting a disk, issuing mk part, and choosing a GPT or MBR label.

Explore EXT4, XFS, and BTRFS file systems, their key attributes, and use-case based selection for Linux servers, including performance, large-file handling, and snapshots.

Prepare a disk by creating a partition and applying a file system with mkfs tools (ext4, xfs). Then mount the partition to store files and explore labeling and swap setup.

Identify causes and symptoms of file system health issues and learn to diagnose and repair them with fsck, boot-time checks, and filesystem-specific tools like XFS repair.

Monitor disk utilization and performance to identify full disks and slow I/O. Use df -h for usage, du for directory sizes, and iostat and iotop to diagnose bottlenecks.

Learn how Linux recognizes removable storage, mounts it to /mnt or /media, and safely remove USB keys and optical disks using mount and unmount commands.

Learn how to identify fixed disks, mount them, and auto-mount at boot using /etc/fstab, ensuring reliable storage with proper options and tests.