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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 columns and sorted vertically.) dircolors: Set up color for ls: install: Copies files and set attributes ln: Creates a link ...
In Unix and Unix-like operating systems, chmod is the command and system call used to change the access permissions and the special mode flags (the setuid, setgid, and sticky flags) of file system objects (files and directories). Collectively these were originally called its modes, [1] and the name chmod was chosen as an abbreviation of change ...
Print a calendar Version 5 AT&T UNIX cat: Filesystem Mandatory Concatenate and print files PDP-7 UNIX cd: Filesystem Mandatory Change the working directory Version 6 AT&T UNIX cflow: C programming Optional (XSI) Generate a C-language call graph: System V chgrp: Filesystem Mandatory Change the file group ownership PWB UNIX chmod: Filesystem ...
Generally, the mask only affects file permissions during the creation of new files and has no effect when file permissions are changed in existing files; however, the chmod command will check the mask when the mode options are specified using symbolic mode and a reference to a class of users is not specified.
Most file systems include attributes of files and directories that control the ability of users to read, change, navigate, and execute the contents of the file system. In some cases, menu options or functions may be made visible or hidden depending on a user's permission level; this kind of user interface is referred to as permission-driven.
Since this template affects many articles, you may wish to discuss changes on the talk page first. This should really only include standard universal commands that come with all distributions adhering to the Single UNIX Specification .
chattr is the command in Linux that allows a user to set certain attributes of a file. lsattr is the command that displays the attributes of a file.. Most BSD-like systems, including macOS, have always had an analogous chflags command to set the attributes, but no command specifically meant to display them; specific options to the ls command are used instead.
command is a shell command for Unix and Unix-like operating systems. It is used to execute a command whilst suppressing normal shell function lookup. [1] It is specified in the POSIX standard and is often implemented in Unix shells as a shell builtin function. Built-in functions take precedence over programs when resolving the name of a command.