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A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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about Linux in general -- NOT specific to a particular distribution. If the question just happens to be in a Linux environment, please specify your Linux distribution in the body o…
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Questions specific to GNU’s Bourne Again SHell, as opposed to other Bourne/POSIX shells. For questions about Unix shells in general, use the /shell tag instead.
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Questions about shell scripts, executable files that are interpreted by a shell (bash, zsh, etc.).
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Questions specific to the Debian official distribution (stable, testing, or unstable); if you are using a derivative of Debian (e.g. Mint, Ubuntu, Kali, etc), then use that distribution’s tag instead.
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Unix's command-line interface. You can type commands in a shell interactively, or write scripts to automate tasks. Use this tag for questions applying to /bin/sh and most compatible shell…
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just because your system is running Ubuntu. Use it _only_ if your question is somehow specific to Ubuntu only. Note that is specifically dedicated to Ub…
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Questions specific to the CentOS Linux distribution. Use this tag if your question relates to how the CentOS distribution affects your problem; do not use it if you just happen to be using CentOS and …
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Manipulation or examining of text by programs, scripts, etc.
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a protocol for securely running commands on a remote computer. Use this tag for questions about configuring, using and trouble-shooting SSH client and server software.
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Managing and using network connectivity on a unix system
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A pattern-directed scanning and processing language.
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the interactive interface to your shell.
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a command-line stream editor for filtering and transforming text.
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Manipulating files: copying, renaming, searching, analyzing, archiving, etc. For operating on text in a file, see /text-processing. For questions about the Files file manager (formerly Nautilus), see …
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a command-line tool for searching text patterns in files
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a Linux distribution with a fast release cycle, maintained by a community and sponsored by Red Hat.
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the Unix way of controlling access to resources such as files, directories and devices and may be specified for an owner, group, or all users.
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a sequence of commands or instructions that are executed by an interpreter program rather than compiled into a standalone executable program.
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a Linux distribution based on Ubuntu aiming to be more usable out-of-the-box
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a simple, lightweight, rolling Linux distribution aimed at keeping things simple. Use this tag for questions specific to Arch Linux. Do NOT use this tage for derivatives, such as Manjaro…
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an environment for text input/output. Inside the terminal, one runs command-line and text mode programs (including shells).
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a way to organize and store computer files with their data.
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a commercially supported Linux distribution.
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a command line utility to search for files in a directory hierarchy
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Attaches a file system to a specified point in an existing filesystem hierarchy
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Everything about UNIX kernels: development, configuration, compilation, design, etc.
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Bootloader issues: what happens before the operating system itself starts.
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an alternative approach to SystemV and Upstart init daemons for Linux. It is intended to provide a better framework for expressing services' dependencies, allow more work to be done in para…
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Questions about Linux kernel and Linux kernel related topics eg. implementation details such as system calls, kernel customization, etc. For Linux user space topics which do not involve kernel details…
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the standard software package management system for Debian and its derivatives.
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The X window system (commonly X Window System or X11, based on its current major version being 11) is a computer software system and network protocol that provides a basis for graphical user interface…
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Content related to computer security., i.e. content about policies, mechanisms, etc. needed make sure data is not leaked or corrupted and services available in all circumstances.
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an instance of a computer program that is being executed.
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iptables allow creation of rules to define packet filtering behavior.
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Installing software on a running system, either as binaries or from source. This is usually done using your system's package manager.
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The command line and other Unix-like aspects of Apple's macOS (Mac OS X)