Rohan Timalsina

Use lvextend to grow a Linux logical volume: pre-checks, size syntax (-L and -l), grow ext4 with resize2fs or XFS with xfs_growfs, post-checks, and what to do when the volume group is full.

netstat command in Linux is used to get the list of listening TCP and UDP sockets. Get the list of ESTABLISHED, TIME_WAIT, LISTEN sockets with program name. Get the routing information.

Learn advanced grep pattern matching in Linux with practical examples. This guide covers grep regex examples, OR conditions, pattern files, matching words before or after patterns, extracting data using regex, and many …

Learn how to use locate command in Linux with cheat sheet, syntax, and practical examples. Understand how locate works, install it on Ubuntu and CentOS, and compare locate vs find command for faster file search.

Learn how to use sudo command in Linux with cheat sheet, syntax, and 15+ real-world examples. Understand sudoers configuration, run commands as root or another user, and fix common sudo errors.

Learn the nmcli command in Linux with syntax, options, and practical examples. Configure IP address (IPv4/IPv6), DNS, routing, hostname, bonding, bridging, and NetworkManager connections using nmcli on RHEL, CentOS, and …

Learn the Nmap command in Linux with 30+ practical examples and a quick cheat sheet. This guide explains how to perform host discovery, port scanning, service detection, OS detection, firewall detection, and network …

Learn how to use the ipcs command in Linux with syntax, options, cheat sheet, and practical examples. This guide explains how to view shared memory segments, message queues, and semaphore arrays, inspect IPC resources, …

Learn how to use the ip route command in Linux with syntax, cheat sheet, and practical examples. This guide explains how to view routing tables, add and delete routes, configure multiple gateways, troubleshoot routing …

Learn how to use the iotop command in Linux with syntax, options, cheat sheet, and practical examples. This guide explains how to monitor disk I/O usage by processes, identify applications causing high disk activity, and …

Learn how to use the hping3 command in Linux with syntax, options, cheat sheet, and practical examples. This guide explains how to perform packet crafting, port scanning, firewall testing, traceroute analysis, and …

Learn how to use the groupadd command in Linux with syntax, options, and practical examples. This guide explains how to create groups, assign custom GIDs, create system groups, manage users in groups, and troubleshoot …

Learn how to use the iostat command in Linux with syntax, options, cheat sheet, and practical examples. This guide explains how to monitor CPU utilization, disk I/O performance, device throughput, and storage bottlenecks …

Learn how to use the find command in Linux with this complete cheat sheet. This guide covers find command syntax, commonly used flags, and practical examples for searching files by name, extension, size, permissions, …

Learn how to use the elinks command in Linux to browse websites from the terminal and extract text from HTML pages. This practical cheat sheet covers elinks examples including browsing websites in text mode, using the …

Learn how to use the finger command in Linux to display user account information such as login name, terminal, idle time, home directory, and shell. This cheat sheet includes practical examples for checking logged-in …

Learn how to use the journalctl command in Linux to view, filter, and troubleshoot systemd logs. This practical cheat sheet covers journalctl examples for viewing logs, following logs in real time, filtering by service, …

Learn how to use the dumpe2fs command in Linux to inspect ext2, ext3, and ext4 superblock information, view backup superblocks, check inode and block details, and recover corrupted filesystems with practical examples.

Learn how to use the dpkg command in Linux with practical examples. This cheat sheet covers installing and removing .deb packages, fixing broken packages, querying installed software, force operations, downgrading …

Learn how to use the cut command in Linux with clear, practical examples. This guide covers selecting bytes, characters, and fields, working with delimiters, ranges, complements, and common real-world text-processing use …

A complete DNF command cheat sheet for Linux with practical examples. Learn how to use dnf to install, update, remove packages, manage repositories, work with package groups, undo transactions, and troubleshoot common …

Learn how to use the crontab command in Linux with practical examples. Understand cron syntax, scheduling formats, special time strings, managing user crontabs, debugging cron jobs, and best practices.

Learn how to use the curl command in Linux with clear, practical examples. This cheat sheet covers downloading files, HTTP headers, silent mode, redirects, POST requests, authentication, and common troubleshooting use …

Learn the cpio command in Linux with clear, practical examples. Understand copy- in, copy-out, and pass-through modes, create and extract archives, preserve permissions, work with initramfs, and compare cpio with tar.

Learn dmidecode with practical examples to read SMBIOS/DMI data in Linux. Get BIOS version, system manufacturer, serial number, UUID, memory slot details, and CPU information, plus troubleshooting for permission errors …

Learn how to use the chown command in Linux to change file and directory ownership safely. Covers recursive chown, symbolic links, --from, --reference, verbose output, and best practices.

Learn how to use the cmp command in Linux to compare files byte by byte. Includes practical examples, options like -l, -b, -s, exit codes, and real-world scripting use cases.

Learn how to use the chage command in Linux to manage password expiry, account aging, inactivity locks, and user expiration with practical examples and best practices.

Learn the chattr command in Linux with 11 practical examples. Understand file attributes, immutable files, append-only mode, and how to use lsattr to inspect attributes.

Learn how to use the chgrp command in Linux to change group ownership of files and directories. Includes recursive usage, sudo examples, symbolic links, error handling, and a quick reference cheat sheet.