All Articles
Browse all Linuxize tutorials, guides, and references.
Bash String Manipulation: Substring, Replace, Length, and More
Bash string manipulation using parameter expansion: extract substrings, replace text, strip prefixes and suffixes, change case, and check for substrings with practical examples.
Grep Regex: Regular Expressions Syntax and Examples
Use grep regex to match text patterns. Examples for anchors, character classes, quantifiers, alternation, grouping, and PCRE lookarounds.
Grep Exclude: Patterns, Files, and Directories
Use grep to exclude patterns, files, and directories from search results. Examples for --invert-match, --exclude, --exclude-dir, and --include.
Grep Command in Linux with Examples
The grep command searches files for text patterns. Quick examples for case-insensitive, recursive, whole-word, regex, and context-line searches.
nmcli Command in Linux: NetworkManager CLI Reference
The nmcli command manages NetworkManager from the terminal. This guide covers device status, Wi-Fi connections, static IP configuration, DNS settings, and scripting-friendly output.
How to List Cron Jobs in Linux
View and list all cron jobs on Linux: user crontabs with crontab -l, system jobs in /etc/crontab and /etc/cron.d, and systemd timers.
How to List Groups in Linux
Find which groups a user belongs to in Linux using the groups, id, and getent commands. Includes how to list all groups and group members on the system.
How to List Users in Linux
List all users in Linux with getent passwd or /etc/passwd. Filter human users by UID, check group membership, and see who is logged in.
How to Use wget in Linux with Examples
Step-by-step wget tutorial covering downloads, resuming, recursive mirroring, authentication, and the most useful options.
timedatectl Command in Linux: Manage Time, Date, and Time Zone
Use timedatectl to check system time, change the time zone, control NTP synchronization, set the clock manually, and inspect RTC settings on Linux.
How to Delete MySQL User Accounts with DROP USER
Delete MySQL or MariaDB user accounts with the DROP USER statement. Covers single and multiple users, IF EXISTS, and session behavior.
How to Change User Password in Ubuntu
Change a user password in Ubuntu from the command line with passwd, or through the GNOME Settings app. Covers your own account and other users.
history Command in Linux: View and Manage Bash History
Use the history command in Linux to view, search, and clean up Bash command history. Covers expansions, HISTSIZE, HISTIGNORE, and security tips.
How to Generate SSH Keys on Linux with ssh-keygen
Learn how to generate SSH keys on Linux using ssh-keygen, copy them to remote servers, and set up passwordless authentication.
How to Check CPU Usage in Linux
This guide explains how to check CPU usage in Linux with top, htop, mpstat, vmstat, sar, ps, uptime, and per-core load tools.
How to Change the Hostname in Linux
Change the hostname in Linux with hostnamectl and /etc/hosts. Covers permanent, temporary, cloud-init, and non-systemd methods.
traceroute Command in Linux
Trace the path packets take to a host with the traceroute command. Examples for ICMP (-I), TCP (-T), max hops (-m), and no-DNS (-n) modes.
How to Undo and Redo in Vim / Vi
Undo and redo in Vim or Vi with u, Ctrl+r, :earlier, and :later. Covers time-based undo, undo branches, and persistent undo with undofile.
How to Delete Lines in Vim / Vi
Delete lines in Vim or Vi with dd, :%d, visual mode, or :g/pattern/d. Examples for single lines, ranges, all lines, and pattern-based deletion.
systemctl Command in Linux: Start, Stop, and Manage Services
Manage services on systemd-based Linux distributions with systemctl. This guide explains how to start, stop, restart, enable, and disable services, reload unit files, and inspect service status.
