[pappy@chmodx]:$ cd projects/linux

← chmodx.shUbuntu 24.04 LTS baseline

Linux Command Reference

A compact, readable command reference for Linux administration and everyday shell work. Every entry links to authoritative Ubuntu or GNU documentation.

DOCUMENTEDUbuntu 24.04 LTS / NobleGNU / Bash where applicable

53 commands

Navigation

Print the current working directory

List directory contents

Change the shell's current working directory

Files & directories

Files & directories

Create files or update file timestamps

Files & directories

Create directories

Files & directories

Copy files and directories

Files & directories

Move or rename files and directories

Files & directories

Remove files or directories

Files & directories

Remove empty directories

Files & directories

Create links between files

Viewing files

Concatenate files and write them to standard output

View text one screen at a time

Output the beginning of files

Output the end of files

Search & text

Print lines that match patterns

Search for files in a directory hierarchy

Sort lines of text files

Report or omit repeated lines

Remove sections from each line of files

Print newline, word, and byte counts

Read from standard input and write to standard output and files

Permissions

Change file mode bits

Change file owner and group

Change file group ownership

Processes

Report a snapshot of current processes

Display Linux processes

Send a signal to a process

Look up processes based on name and other attributes

Signal processes based on name and other attributes

System information

System information

Print system information

System information

Show or set the system hostname

System information

Tell how long the system has been running

Storage

Report file system disk space usage

Estimate file space usage

List block devices

Networking

Show or manipulate routing, network devices, interfaces and tunnels

Investigate sockets

Send ICMP ECHO_REQUEST to network hosts

Transfer data from or to a server

OpenSSH remote login client

Archives

An archiving utility

Compress or expand files

Packages

Command-line interface for the package management system

Services

Control the systemd system and service manager

Query the systemd journal

Users & permissions

Users & permissions

Print effective user name

Users & permissions

Print real and effective user and group IDs

Users & permissions

Change user password

Shell builtins

Write arguments to standard output

Set an environment variable for child processes

Read and execute commands from a file in the current shell

Display or manipulate the command history list

Describe how a command would be interpreted