grep is a tool for finding text inside files. Text is found by matching a pattern provided by the user in one or many files. The pattern may be provided as a basic or extended regular expression, or as fixed strings. By default, the matching text is simply printed to the screen, however the output can be greatly customized to include, for example, line numbers. GNU grep offers many extensions over the standard utility, including, for example, recursive directory searching.

GNU Binutils is a collection of tools for working with binary files. Perhaps the most notable are "ld", a linker, and "as", an assembler. Other tools include programs to display binary profiling information, list the strings in a binary file, and utilities for working with archives. The "bfd" library for working with executable and object formats is also included.

Patch is a program that applies changes to files based on differences laid out as by the program "diff". The changes may be applied to one or more files depending on the contents of the diff file. It accepts several different diff formats. It may also be used to revert previously applied differences.

Any Unix-like operating system needs a C library: the library which defines the "system calls" and other basic facilities such as open, malloc, printf, exit...

The GNU C library is used as the C library in the GNU system and most systems with the Linux kernel.

GNU Binutils is a collection of tools for working with binary files. Perhaps the most notable are "ld", a linker, and "as", an assembler. Other tools include programs to display binary profiling information, list the strings in a binary file, and utilities for working with archives. The "bfd" library for working with executable and object formats is also included.

This package provides all the locales supported by the GNU C Library, more than 400 in total. To use them set the LOCPATH environment variable to the share/locale sub-directory of this package.

This package provides all the locales supported by the GNU C Library, more than 400 in total. To use them set the LOCPATH environment variable to the share/locale sub-directory of this package.

Sed is a non-interactive, text stream editor. It receives a text input from a file or from standard input and it then applies a series of text editing commands to the stream and prints its output to standard output. It is often used for substituting text patterns in a stream. The GNU implementation offers several extensions over the standard utility.

GNU Binutils is a collection of tools for working with binary files. Perhaps the most notable are "ld", a linker, and "as", an assembler. Other tools include programs to display binary profiling information, list the strings in a binary file, and utilities for working with archives. The "bfd" library for working with executable and object formats is also included.

Any Unix-like operating system needs a C library: the library which defines the "system calls" and other basic facilities such as open, malloc, printf, exit...

The GNU C library is used as the C library in the GNU system and most systems with the Linux kernel.

This package provides a small sample of UTF-8 locales mostly useful in test environments.

The Time Zone Database (often called tz or zoneinfo) contains code and data that represent the history of local time for many representative locations around the globe. It is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight-saving rules.

GNU Coreutils package includes all of the basic command-line tools that are expected in a POSIX system, excluding shell. This package is the union of the GNU fileutils, sh-utils, and textutils packages. Most of these tools offer extended functionality beyond that which is outlined in the POSIX standard.

Make is a program that is used to control the production of executables or other files from their source files. The process is controlled from a Makefile, in which the developer specifies how each file is generated from its source. It has powerful dependency resolution and the ability to determine when files have to be regenerated after their sources change. GNU make offers many powerful extensions over the standard utility.

This package provides a small sample of UTF-8 locales mostly useful in test environments.

Any Unix-like operating system needs a C library: the library which defines the "system calls" and other basic facilities such as open, malloc, printf, exit...

The GNU C library is used as the C library in the GNU system and most systems with the Linux kernel.

The which program finds the location of executables in PATH, with a variety of options. It is an alternative to the shell "type" built-in command.

Any Unix-like operating system needs a C library: the library which defines the "system calls" and other basic facilities such as open, malloc, printf, exit...

The GNU C library is used as the C library in the GNU system and most systems with the Linux kernel.

Bash is the shell, or command-line interpreter, of the GNU system. It is compatible with the Bourne Shell, but it also integrates useful features from the Korn Shell and the C Shell and new improvements of its own. It allows command-line editing, unlimited command history, shell functions and aliases, and job control while still allowing most sh scripts to be run without modification.

Bash is the shell, or command-line interpreter, of the GNU system. It is compatible with the Bourne Shell, but it also integrates useful features from the Korn Shell and the C Shell and new improvements of its own. It allows command-line editing, unlimited command history, shell functions and aliases, and job control while still allowing most sh scripts to be run without modification.

Bash TAP is a TAP-compliant Test::More-style testing library for Bash shell scripts and functions. Along with the Test::More-style testing helpers it provides helper functions for mocking commands and in-process output capturing.

bash_unit allows you to write unit tests, run them and, in case of failure, display the stack trace with source file and line number indications to locate the problem.

This package provides extensions that allow Bash to provide adapted completion for many common commands.

Bats is a TAP-compliant testing framework for Bash. It provides a simple way to verify that the UNIX programs you write behave as expected. Bats is most useful when testing software written in Bash, but you can use it to test any UNIX program.