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  2. List of GNU Core Utilities commands - Wikipedia

    en.wikipedia.org/wiki/List_of_GNU_Core_Utilities...

    Name Description chcon: Changes file security context chgrp: Changes file group ownership chown: Changes file ownership chmod: Changes the permissions of a file or directory cp: Copies a file or directory dd: Copies and converts a file df: Shows disk free space on file systems dir: Is exactly like "ls -C -b". (Files are by default listed in ...

  3. List of POSIX commands - Wikipedia

    en.wikipedia.org/wiki/List_of_POSIX_commands

    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.

  4. find (Unix) - Wikipedia

    en.wikipedia.org/wiki/Find_(Unix)

    By default, find returns a list of all files below the current working directory, although users can limit the search to any desired maximum number of levels under the starting directory. The related locate programs use a database of indexed files obtained through find (updated at regular intervals, typically by cron job) to provide a faster ...

  5. PATH (variable) - Wikipedia

    en.wikipedia.org/wiki/PATH_(variable)

    When a command is entered in a command shell or a system call is made by a program to execute a program, the system first searches the current working directory and then searches the path, examining each directory from left to right, looking for an executable filename that matches the command name given. Executable programs have filename ...

  6. Outline of Ubuntu - Wikipedia

    en.wikipedia.org/wiki/Outline_of_Ubuntu

    fuser — list process IDs of all processes that have one or more files open. ln — link files. ls — list directory contents. mkdir — make directory. mv — move or rename files. pax — portable archive interchange. pwd — print working directory; return working directory name.

  7. which (command) - Wikipedia

    en.wikipedia.org/wiki/Which_(command)

    The command is used to find and print the location of a specific program. [13] Inputs: FILE – Specifies the command to search for; NORES – Resident programs are not included in the search; RES – Only resident programs are considered; ALL – Will find all locations of the FILE, which may cause the printing of the same location several times

  8. ldd (Unix) - Wikipedia

    en.wikipedia.org/wiki/Ldd_(Unix)

    ldd (List Dynamic Dependencies) is a *nix utility that prints the shared libraries required by each program or shared library specified on the command line. [1] It was developed by Roland McGrath and Ulrich Drepper. [2] If some shared library is missing for any program, that program won't come up.

  9. sudo - Wikipedia

    en.wikipedia.org/wiki/Sudo

    sudo (/ s uː d uː / [4]) is a program for Unix-like computer operating systems that enables users to run programs with the security privileges of another user, by default the superuser. [5] It originally stood for "superuser do", [ 6 ] as that was all it did, and this remains its most common usage; [ 7 ] however, the official Sudo project ...