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Name Description arch: Prints machine hardware name (same as uname -m) basename: Removes the path prefix from a given pathname chroot: Changes the root directory date: Prints or sets the system date and time dirname: Strips non-directory suffix from file name du: Shows disk usage on file systems echo: Displays a specified line of text env
Often a wrapper for the man -k command, the apropos command is used to search the "name" sections of all manual pages for the specified string or strings (called keywords). The output is a list of all manual pages containing the search term (case insensitive) in their name or description.
This category is under the Open Content, free software category tree, all Subcats should be Free Software. For Applications that run under Linux but are not necessarily free software, see Category:Linux software
GLib provides advanced data structures, such as memory chunks, doubly and singly linked lists, hash tables, dynamic strings and string utilities, such as a lexical scanner, string chunks (groups of strings), dynamic arrays, balanced binary trees, N-ary trees, quarks (a two-way association of a string and a unique integer identifier), keyed data lists, relations, and tuples.
Strings are recognized by looking for sequences of at least 4 (by default) printable characters terminating in a NUL character (that is, null-terminated strings).Some implementations provide options for determining what is recognized as a printable character, which is useful for finding non-ASCII and wide character text.
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If a program is free, then it can potentially be included in a free operating system such as GNU, or free versions of the Linux system. Free software in the sense of copyright license (and the GNU project) is a matter of freedom, not price. However proprietary software companies typically use the term "free software" to refer to price.
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.