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This is a list of commands from the GNU Core Utilities for Unix environments. These commands can be found on Unix operating systems and most Unix-like operating systems. GNU Core Utilities include basic file, shell and text manipulation utilities. Coreutils includes all of the basic command-line tools that are expected in a POSIX system.
POSIX mandates 512-byte default block sizes for the df and du utilities, reflecting the typical size of blocks on disks. When Richard Stallman and the GNU team were implementing POSIX for the GNU operating system, they objected to this on the grounds that most people think in terms of 1024 byte (or 1 KiB) blocks.
Support for command history means that a user can recall a previous command into the command-line editor and edit it before issuing the potentially modified command. Shells that support completion may also be able to directly complete the command from the command history given a partial/initial part of the previous command.
getopt is a concise description of the common POSIX command argument structure, and it is replicated widely by programmers seeking to provide a similar interface, both to themselves and to the user on the command-line. C: non-POSIX systems do not ship getopt in the C library, but gnulib [6] and MinGW (both accept GNU-style), as well as some ...
Utilities listed in POSIX.1-2017. This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.
A full commandline: <command_name> <options> <operands> <arguments> &, or; A job control identifier as denoted by a leading percent symbol: %1 &; A shell portability mode where command lines can be interpreted in conformance with the POSIX standard; Command parsing: Comments are ignored: Bourne-style # hashtag comments, and; Thompson-style ...
More commonly, the desired command names are linked (using hard or symbolic links) to the BusyBox executable; BusyBox reads argv[0] to find the name by which it is called, and runs the appropriate command, for example just /bin/ls. after /bin/ls is linked to /bin/busybox. This works because the first argument passed to a program is the name ...
The command is available as a separate package for Microsoft Windows as part of the GnuWin32 project [2] and the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities. [10] Windows also includes the similar where.exe command. The same functionality is available in MS-DOS, but not Windows, as the built-in TRUENAME command.