Foundations Overview

20 labs · Ubuntu 22.04 · Docker-verified

No prior experience needed — start from zero and build a solid Linux foundation.

---

Labs

#	Lab	Topics
01	Terminal Basics	whoami, pwd, uname, date, man
02	Filesystem Hierarchy (FHS)	/etc, /var, /proc, /usr, /tmp
03	Directory Navigation	cd, ls, pwd, absolute vs relative paths
04	Creating and Viewing Files	touch, echo, cat, head, tail, wc
05	Copying and Moving Files	cp, mv, diff, cp -p
06	Deleting Files and Directories	rm, rmdir, glob patterns, find -delete
07	Understanding Permissions	rwx, octal notation, SUID, sticky bit
08	chmod — Changing Permissions	chmod symbolic/octal, umask
09	chown and chgrp — Ownership	chown, chgrp, recursive ownership
10	Users and Groups Management	useradd, groupadd, usermod, /etc/shadow
11	nano — Text Editing	nano shortcuts, config files
12	grep — Searching Text	grep -i/-n/-v/-E/-c, regex
13	find — Locating Files	find by name/type/size/age/perm, -exec
14	Processes — ps and Signals	ps aux, kill, jobs, /proc/PID/
15	Disk Usage — df and du	df -h, du -sh, inode usage
16	Package Management	apt, dpkg, apt-cache, apt-get
17	I/O Redirection and Pipes	>, >>, 2>, |, tee, awk, cut
18	Environment Variables	export, PATH, .bashrc, defaults
19	Shell Scripting Basics	variables, if/else, for, while, functions
20	Networking Basics (Capstone)	ip, hostname, ping, curl, ss

---

Start here → Lab 01: Terminal Basics