Linux Essentials Preparation

About Course

Aligned to LPI 010-160 official exam topics across all 5 topic areas. Covers the Linux community, navigation, command line, OS concepts, and security.

Course Content

Topic 1 — Linux Community & Open Source (20%)

Linux and open source: history, kernel, FOSS, GPL vs permissive licenses
Linux distributions: Debian/Ubuntu, RHEL/CentOS/Rocky, Arch, Alpine; package managers
Open source licensing: GPL v2/v3, LGPL, MIT, Apache, BSD — rights and obligations
Linux career paths: sysadmin, DevOps, cloud engineer, security analyst

Linux Essentials Preparation

About Course

Course Content

Topic 1 — Linux Community & Open Source (20%)

Linux and open source: history, kernel, FOSS, GPL vs permissive licenses

Linux distributions: Debian/Ubuntu, RHEL/CentOS/Rocky, Arch, Alpine; package managers

Open source licensing: GPL v2/v3, LGPL, MIT, Apache, BSD — rights and obligations

Linux career paths: sysadmin, DevOps, cloud engineer, security analyst

Topic 2 — Finding Your Way on a Linux System (20%)

Command line basics: shell, terminal, pwd, ls, cd, man, history, tab completion, I/O redirection, pipes

Linux file system hierarchy: /, /etc, /var, /home, /tmp, /proc, /dev, /usr, /bin; file types

Navigating the filesystem: absolute vs relative paths, ls options, hidden files, file types

Getting help: man pages, info, –help, apropos, whatis, tldr

Topic 3 — The Power of the Command Line (20%)

File operations: cp, mv, rm, mkdir, find, grep, sort, wc, head, tail, cat, less

Archiving and compression: tar, gzip, bzip2, zip; package management commands

Shell scripting basics: variables, conditionals, loops, functions, shebang

Regular expressions: basic and extended regex, grep -E, sed, awk patterns

Environment variables: PATH, HOME, USER, SHELL; export, env, set, unset

Topic 4 — The Linux Operating System (20%)

Linux file system hierarchy: /, /etc, /var, /home, /tmp, /proc, /dev, /usr, /bin; file types

Processes and hardware: ps, top, kill, systemctl, journalctl, hardware info commands

Disk management: fdisk, lsblk, df, du, mount, umount, /etc/fstab

Networking on Linux: ip addr, ip route, ss, ping, traceroute, /etc/hosts, /etc/resolv.conf

Boot process: BIOS/UEFI, GRUB, kernel, initramfs, systemd targets

Topic 5 — Security & File Permissions (20%)

Users and groups: useradd, usermod, userdel, passwd, id, /etc/passwd, /etc/shadow, sudo, wheel

File permissions and security: chmod, chown, SUID/SGID/sticky bit, SSH hardening, ufw, Fail2ban

SSH: key-based authentication, sshd_config hardening, port forwarding, scp, sftp

Firewall management: ufw, firewalld, iptables basics — rules, chains, policies

Security tools: Fail2ban, auditd, lynis, chkrootkit, clamav — purpose and usage