explainshell.com is a web tool that matches command-line arguments to their help text. Users write down a command line to see the help text that matches each argument. The page includes numerous shell command examples.
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GnuPG is a free implementation of the OpenPGP standard, allowing users to encrypt and sign data and communications. It includes a key management system, access modules for public key directories, and support for S/MIME and Secure Shell. It is a command line tool with frontend applications and libraries available, and it can be freely used, modified and distributed under the GNU General Public License.
greetd is a minimal and flexible login manager daemon that makes no assumptions about what to launch. It can start anything runnable from a shell in a TTY, and programs that speak a simple JSON-based IPC protocol can act as greeters. The project provides agreety, a simple text-based greeter, and lists third-party greeters for graphical and console sessions.
Guillotine is a GNOME shell extension designed to provide a highly customizable menu for efficient command execution. It allows users to launch commands and toggle system services via the user-configured menu interface.
Linux Live Kit is a set of shell scripts for creating a custom Live Linux. Users install a distribution, ensure squashfs and aufs or overlayfs kernel modules are supported, then run the build script as root to produce an ISO image; a TAR archive and bootinst.sh can make a bootable USB device.
MEGA CMD is a command line tool that works with a MEGA account and data, allowing access to MEGA services via commands. It offers an interactive shell for navigating an account like a local folder and scriptable commands for Linux, Mac, or Windows shells, aimed at advanced users automating interaction with their MEGA account.
nb is a command line and local web note-taking, bookmarking, archiving, and knowledge base application. It stores data as plain text, creates notes in formats such as Markdown, Org, LaTeX, and AsciiDoc, and is contained in a single portable shell script. It works in standard Linux and Unix environments, including macOS and Windows via WSL, MSYS, and Cygwin.
Netcat (nc) is a networking tool available on Linux, Windows, macOS and BSD. It can be used for port scanning, file transfers, simple servers, reverse shells and debugging. The page also lists installation commands for several distributions and example commands.
Oh My Posh is a prompt engine for shells, with one configuration intended to work across PowerShell, Bash, Zsh, Fish, Nu and others on Windows, macOS, Linux, WSL, containers and SSH. It is written in Go, and its segments run concurrently and cache results so prompts render in milliseconds. Around 120 segments cover git status, cloud context, language versions and system metrics.
PiVPN is a set of shell scripts designed to set up and manage a VPN on a Raspberry Pi, and the installer also works on Ubuntu or Debian. It allows customization of the VPN port, key encryption strength and client DNS server, and provides a pivpn command for adding or revoking client profiles.
pngquant is a command-line utility and library for lossy compression of PNG images. The conversion reduces file sizes significantly and preserves full alpha transparency. Generated images are compatible with all web browsers and operating systems. It offers a fast mode for real-time processing and integrates with shell scripts, GUIs and server-side software.
Rizin is a free and Open Source Reverse Engineering Framework. It uses a shell-like command-line environment for analyzing binaries, with automatic signature detection to match unnamed functions against FLIRT signatures. Projects for saving and loading Rizin sessions are in beta, and Cutter is Rizin's official graphical user interface. A package manager for downloading, compiling and installing plugins is still in early development.
SKTimeStamp is a Windows shell extension that adds a tab to the Explorer properties dialog. The tab allows changing the date and time of files and folders. It requires Windows 10 22H2 or later.
Starship is a minimal and customizable prompt for any shell that shows the information the user needs. Quick installation is available for Bash, Fish, ZSH, Ion, Tcsh, Elvish, Nu, Xonsh, Cmd, and PowerShell. It is written in Rust and works on the most common shells and operating systems.
Tomb is a free and open source tool for folder encryption on GNU/Linux, creating encrypted storage folders opened and closed with associated key files protected by a user-chosen password. It uses dm-crypt and LUKS via cryptsetup and is a shell script. Tomb works only on GNU/Linux systems and WSL2 starting with Windows11.
Zsh is a shell designed for interactive use that is also a powerful scripting language. The zsh.org site is an index to Zsh information and archives, with links to web pages, frequently asked questions, and distribution sites.