Linux Commands
Command references for core Linux tools, syntax, examples, and practical one-liners.
How to Transfer Files with Rsync over SSH
Use rsync over SSH to copy and synchronize files and directories between local and remote systems, with examples for custom ports, dry runs, compression, and progress display.
pstree Command in Linux: View the Process Tree
Use the pstree command in Linux to display running processes as a tree, show PIDs and PGIDs, trace parent processes, and highlight specific branches.
type Command in Linux: Show Command Type and Location
The type command shows whether a name is a shell builtin, alias, function, keyword, or executable file, and how the current shell resolves it.
How to Create a systemd Service File in Linux
Create a systemd service file in Linux with step-by-step instructions for unit file structure, service types, restart policies, and service management with systemctl.
Linux Watch Command
Use the watch command in Linux to run commands at regular intervals and monitor output changes in the terminal. Includes interval, highlighting, pipes, and practical examples.
xargs Command in Linux: Usage and Examples
The xargs command builds and executes commands from standard input. This guide covers the most useful xargs options with practical examples.
locate Command in Linux: Find Files Quickly
Search for files and directories by name using the locate command in Linux. Covers installation, database updates, pattern matching, and common options.
pgrep Command in Linux: Find and Filter Running Processes
The pgrep command finds running processes by regex pattern, user, terminal, or parent PID and prints matching PIDs. This guide covers exact matching, filtering options, and script-friendly exit checks.
uniq Command in Linux: Remove and Count Duplicate Lines
The uniq command removes or counts duplicate adjacent lines in a file. This guide explains how to filter duplicates, count occurrences, and use uniq with sort in pipelines.
groupdel Command in Linux: Delete a Group
Learn how to delete a Linux group using the groupdel command. Covers syntax, verification, handling primary group errors, and what happens to files owned by the deleted group.
top Command in Linux: Monitor Processes in Real Time
The top command displays running processes and system resource usage in real time. This guide covers sorting, filtering, load metrics, and key interactive controls.
sort Command in Linux: Sort Lines of Text
The sort command sorts lines of text files alphabetically or numerically. This guide covers sorting by column, reverse order, unique lines, and combining sort with other commands.
wall Command in Linux: Broadcast Messages to Logged-In Users
The wall command broadcasts a message to the terminals of all logged-in users in Linux. This guide covers sending messages from arguments, files, and pipes, with group targeting and banner control.
journalctl Command in Linux: Query and Filter System Logs
journalctl queries the systemd journal and lets you filter logs by unit, time, priority, boot, and process. This guide covers the most useful journalctl options with practical examples.
stat Command in Linux: Display File and Filesystem Information
The stat command displays detailed file and filesystem information in Linux, including size, permissions, inode number, and timestamps. This guide covers all major stat options with examples.
Timeout Command in Linux
The timeout command runs a specified command and terminates it after a given time limit. This guide covers syntax, signal handling, exit codes, and practical examples for scripts and pipelines.
Rmmod Command in Linux
Learn how to use the rmmod command to remove kernel modules in Linux, including options, troubleshooting, and best practices.
Diff Command in Linux
Learn how to use the diff command in Linux to compare files and directories. Covers unified/context formats, ignore case/whitespace, and common options.
