$ command library

Creates a group.

Creates a user (interactive, Debian/Ubuntu).

Creates or displays shell aliases.

Searches manual page descriptions for keywords.

Manages packages on Debian/Ubuntu.

Queries the APT package cache.

Installs, upgrades, or removes packages from the internet (Debian/Ubuntu).

Displays and modifies the ARP cache.

Displays or modifies file extension associations.

Schedules a command to run once in the future.

Displays or changes file and directory attributes. Attributes: a (archive), r (read-only), h (hidden), s (system).

Processes text by fields and rules.

Resumes a suspended job in the background.

Compresses files into .bz2 format. Levels from -1 (fastest) to -9 (best compression).

Displays a calendar.

Calls a subroutine or another .bat script.

Displays file contents.

Changes the current directory.

Changes the current directory.

Changes group ownership.

Checks a disk for errors.

Checks or schedules chkdsk at boot time for NTFS drives.

Changes file or directory access permissions.

Change file owner and group.

File/folder encryption on NTFS (EFS).

Clear the terminal screen.

Copies the output of a command to the clipboard.

Clears the screen.

Starts a new instance of the command interpreter.

Compare two files byte by byte.

Changes the console window colors. 1st digit = background, 2nd = foreground (hex 0-F).

Binary file comparison.

File and folder compression at the NTFS file system level.

Converts a FAT/FAT32 volume to NTFS without deleting files.

Copies files to another folder. Wildcards: * and ?.

Copy files and directories. Wildcards: * (any number of characters), ? (0 or 1 character).

Maintain crontab files for periodic background jobs.

Transfer data from or to a server using multiple protocols.

Remove sections from each line of files (fields or characters).

Display or set the system date and time.

Displays or sets the system date.

Analyzes fragmentation and defragments a drive.

Deletes files.

Remove a group.

Remove a user.

File system disk space usage information.

Compare two files as text and display differences.

DNS lookup utility.

Displays the contents of a directory.

Interactive tool to manage disks, partitions, and volumes.

Manages Windows images and components.

DNS domain name.

Manage local .deb packages.

Manipulate .deb archives (inspect, extract).

Query the dpkg package database.

Reconfigure an already installed package.

Lists installed drivers.

Estimate file or directory space usage.

Display a line of text.

Displays messages or turns command echoing on or off in a script.

Terminal-based text editor (classic Windows/DOS versions).

Eject CD-ROM tray or removable media.

Display or modify the environment before executing a command.

Deletes files (alias of del).

Close the terminal window or session. Accepts an optional exit status.

Quits the command interpreter window.

Set an environment variable and export it to child processes.

Compares files in text or binary mode.

Manipulates disk partition tables (MBR/GPT).

Moves a background job to the foreground.

Determines file type by inspecting its contents.

Searches for files in a directory hierarchy based on various criteria. Supports logical operators with -a (and), -o (or), and ! (not).

Searches for a string in a file or command output.

Searches for patterns and regular expressions in files.

Displays user information lookup program.

Formats a drive (changes the file system).

Displays amount of free and used memory in the system.

Checks and repairs a Linux file system.

Displays or modifies file types and associated open commands.

Creates and manages disk partitions (graphical interface).

Search for a pattern in one or more files.

Modify a group definition on the system.

Display the groups to which a user belongs.

Compress a file to .gz (replaces the original unless -k is specified).

Output the first part of files.

Display information about bash builtin commands.

Displays command help.

Display or manipulate the history list.

Display or set the system's host name.

Displays the computer name.

Display or set the hardware clock (RTC).

Print user and group information (UID, GID, groups).

Read documentation in hypertext format.

Show and configure network interfaces, addresses, and routing.

Displays and manages IP configuration.

List background jobs running in the current shell.

Query and view system logs managed by systemd.

Send a signal to a process by PID.

Kill processes by name.

Changes the label of a drive or volume.

Show a listing of last logged in users.

Advanced pager (allows forward and backward navigation).

Create links between files (hard link by default, symbolic with -s).

Get locale-specific information (language, character encoding).

Find files by name using an indexed database, much faster than find.

Exit the current user session.

Submit a file for printing.

List directory contents.

List block devices in a tree-like format.

List hardware configuration.

An interface to the system reference manuals.

Creates a directory or folder.

Create directories.

Creates a directory or folder (alias for md).

Build a Linux filesystem on a device.

Display text one screen at a time.

Displays paginated output.

Mount a filesystem or storage device.

Moves a file to another folder.

Move (rename) files and directories.

Simple terminal text editor.

Manages users, groups, shared resources, network connections, and services.

Displays network connections, listening ports, and routing tables.

Displays network connections, ports, and statistics.

Runs a process with an adjusted scheduling priority (-20 high, 19 low).

Numbers lines of a file.

Queries DNS servers and records.

Queries DNS.

Creates and manages partition tables and partitions (text mode).

Changes a user's password.

Displays or sets the PATH variable.

Combines traceroute and ping to analyze packet loss and latency.

Pauses execution until a key is pressed.

Searches for processes by name and returns their PIDs.

Check network connectivity by sending ICMP packets.

Tests connectivity using ICMP.

Send a signal to processes matching a pattern.

Power off the system.

Prints a text file to a printer.

Print all or part of the environment.

Format and print text.

Changes the Command Prompt appearance.

Report a snapshot of the current processes.

Display running processes as a tree.

Print the current working directory.

Removes an empty directory.

Reboots the system.

Renames a file or folder.

Renames a file or folder (alias of ren).

Alters priority of running processes.

Replaces existing files or adds new files to a destination directory.

Resets the terminal to its default state (useful when displaying garbled output).

Reverse lines characterwise.

Remove files or directories (including non-empty ones with -R).

Remove empty directories.

Removes an empty directory (alias of rd).

Robust file and directory copy; includes retry and mirroring capabilities.

Displays and modifies the IP routing table.

Synchronizes files and directories locally or remotely, copying only differences.

Manages Windows services.

Copies files over SSH.

Processes and transforms text using expressions.

Displays or sets environment variables in CMD.

Scans and repairs errors in system files.

Powers off or reboots the system (can be scheduled).

Shuts down, restarts, or signs out.

Pauses for N seconds.

Sorts lines of text files.

Sorts lines of a file or input.

Dumps socket statistics and network connections.

Connects to a remote system using SSH.

Starts a program or opens a new window.

Displays detailed file status: size, permissions, inode, and timestamps.

Switches to another user (substitute user).

Creates virtual drives associated with a path.

Execute a command as administrator (root).

Control system services and units managed by systemd.

Detailed hardware and OS information.

Output the last part of files.

Archive files and directories. When combined with -z (gzip) or -j (bzip2), it also compresses.

Terminates a process by PID or name.

Displays currently running processes.

Read from standard input and write to standard output and files.

Displays or sets the system time.

Sets the window title.

Display Linux processes.

Change file timestamps or create an empty file.

Translate or delete characters.

Displays the path to a destination using hops.

Displays directory contents in a tree-like format.

Displays a directory tree.

Indicates how the shell interprets a command name.

Displays the contents of a text file.

Displays or sets the default permission mask.

Unmounts a filesystem.

Removes shell aliases.

Displays system information.

Removes consecutive duplicate lines (commonly used with sort).

Extracts and lists files in ZIP archives.

System uptime.

Create a new user account on the system.

Modify an existing user account.

Currently logged in users (simple list).

Displays the Windows version.

Enables or disables disk write verification.

Modal terminal text editor, widely used in system administration.

Displays the volume label and serial number.

Show who is logged on and what they are doing.

Wait for a process or job to complete.

Count lines, words, and characters.

Download files using HTTP, HTTPS, or FTP.

Display one-line manual page descriptions.

Locates files matching a pattern in PATH or a specified directory.

Locate an executable in the PATH.

Show who is logged on.

Print the current username.

Displays currently logged-on user information.

Windows Management Instrumentation (WMI) command-line utility.

Build and execute command lines from standard input.

Copies files and directory trees.

Output a string repeatedly until killed (defaults to 'y'). Useful for auto-confirming prompts.

Package manager for older RHEL, CentOS, and Fedora releases.

Creates ZIP archives.