LPI Linux Essentials

Explore how to interact with linux using bash, navigate multi-user ttys, login methods, and command syntax with options and arguments, including ssh and telnet.

Learn to get help in linux using man, whatis, whereis, and info. Explore manual sections like man1, man5, and man8, navigate, search, and locate manuals with manpath.

This course explains how Linux treats everything as a file, covers regular files, directories, and links, contrasts soft and hard links, and files like character, block, pipes, and sockets.

Explore the linux filesystem hierarchy standard and learn how the single root / organizes key directories like /bin, /etc, /usr, and /var, while using pwd, cd, and tree to navigate.

Navigate Linux file paths by differentiating path and PATH. Use pwd, ls, and cd to explore absolute and relative paths, learn about working directory, dot, dotdot, and Bash tab completion.

Explore Linux file management by using ls to view directories, navigate with cd and pwd, and understand options such as -l, -a, -d, -R and colorized output.

Learn to manage Linux files and directories with mkdir, rmdir, touch, and rm, including mkdir -p, rm -r, rm -rf, and rm -i prompts; verify paths with ls and which.

Move, rename, and copy files using mv and cp commands to relocate items, rename them, or copy directories, with interactive prompts to avoid overwriting.

Learn to view and inspect text files in Linux using cat, paging with more or less, head and tail, and tools like cut, sort, wc, and grep for pattern search.

Explore how the shell interprets and executes commands in unix-like systems. Master wildcard expansion and redirection, using *, ?, [], !, >, and 2>&1, plus pipes and command substitution.

Master process management by identifying process types: changeups, demons, and the criminal trials. Use ps and top to monitor, control, and prioritize processes, including background jobs, signals, and nohup.

Explore how Linux partitions and file systems organize data with blocks and inodes, explain superblocks, and compare hard and symbolic links, plus disk usage monitoring.

Explore archiving and compressing files on Linux, including creating, listing, updating, and extracting archives, with permissions, extensions, and gzip and zip/bzip2 compression.

Implement Linux user and group management to ensure security; assign unique usernames, UIDs, and passwords, control file ownership and permissions, and configure primary and secondary groups for access.

Apply Linux file and directory permissions by owner, group, and others using read, write, and execute; use symbolic or octal chmod, manage umask, and adjust ownership with chown and chgrp.

Explore special permissions—setuid, setgid, and the sticky bit—and how they affect executable files and directories, including examples like the password program and shared project directories.