The Complete Linux Guide - From Beginner to Advanced (2026)

Download VirtualBox from virtualbox.org and install on Windows using the Windows hosts package, then run the wizard, note the network warning, and launch VirtualBox Manager for your Linux lab.

Master the linux terminal by running commands like date, uptime, who, and pwd, and using help and man pages to understand the home directory and current user.

Discover the Linux file system hierarchy, from the root directory to /bin, /sbin, /usr, /etc, /var, /run, /home, /tmp, /dev, and /boot, and learn each directory's role for system administration.

Learn to manage Linux directories by creating, listing, and navigating with mkdir, ls, and cd, then copy, move, rename, and delete directories using cp -r, mv, and rm -r.

Learn to use grep and regular expressions to analyze log files. Use -i for case-insensitive matches and anchors like ^ and $ in grep dot txt.

Master the grep command to search text in Linux, using case-insensitive matches, starts with, ends with, and contains patterns; combine options, pipe results, and redirect output for log analysis.

Navigate /usr/share/doc with cd, pwd, and ls to read package documentation such as wget and grub, and use rpm to locate doc paths and open them in Firefox.

Learn how to use input and output redirection in Linux to redirect stdout, stderr, and stdin; overwrite or append to files, redirect input, and pipe outputs with cat and tee.

Learn to connect to remote Linux systems via SSH by specifying user and IP or hostname, handle known_hosts and hosts file, and understand host keys for secure login.

Configure ssh key-based authentication by generating a private/public key pair, copying the public key to the remote server, and logging in with the key using an optional passphrase.

generate public and private keys and configure key-based authentication for ssh connections to a remote host. copy the public key with ssh-copy-id or manually, and verify passwordless logins.

Modify users and groups, unlock accounts, rename groups, set or change group IDs, assign primary and supplementary groups, and manage password aging and expiry on a Linux system.

Explore Linux file and directory permissions, ownership, and groups, using ls -l and chmod to set read, write, and execute across owner, group, and others.

Learn to monitor running processes with the ps command, view pid, terminal type, cpu usage, memory, and state with options like ps x, ps ax, and ps -F.

Learn how Linux stores and analyzes logs, reads and monitors /var/log files, and uses tail, head, and less to troubleshoot with systemd journald and rsyslog as the logging services.

Learn how rsyslog collects and routes syslog events and forwards logs to another server. Understand log rotation with logrotate, and configure facilities, priorities, and custom files in /etc/rsyslog.d and /etc/rsyslog.conf.

Learn how to switch between systemd targets manually, such as graphical and multi-user, using systemctl isolate, view dependencies, and set the default boot target.

Learn how to reset the root password by interrupting the boot to emergency mode, remounting the root filesystem as read-write, and relabeling for a secure login.

Learn to mount and unmount Linux file systems using device paths and UUIDs, create mount points, verify with df, and resolve busy mount points with lsof.

Extend an existing logical volume by creating partitions, physical volumes, and a Lion volume group, then format with xfs and grow the filesystem to seven gigabytes.

Create and enable swap by adding a swap partition and a swap file to extend swap size, using fdisk, mkswap, swapon, and updating fstab.

Learn to configure linux clients for nfs and cifs network file systems, mount shared directories, and create persistent mounts via fstab, with installation steps and verification across environments.

Learn to configure Samba to provide network shares to a specific client using Linux server and Linux client, including host edits, service setup, and mounting the share from the client.

Configure Kerberos integration on an NFS server and client to control access to a shared directory, including setting up keytabs, exporting the share, and enforcing Kerberos authentication.

Configure Linux network with nmcli by listing connections, inspecting devices, creating and activating default and static ethernet connections, and updating IP addresses, DNS, and gateway.

Learn to configure linux network settings by editing ifcfg interface files in the network-scripts directory, assign static ip addresses and dns, and verify with nmcli and ip addr.