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  2. List of GNU Core Utilities commands - Wikipedia

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

    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 to a ...

  3. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    Distinct permissions apply to the owner. Files and directories are assigned a group, which define the file's group class. Distinct permissions apply to members of the file's group. The owner may be a member of the file's group. Users who are not the owner, nor a member of the group, comprise a file's others class. Distinct permissions apply to ...

  4. chmod - Wikipedia

    en.wikipedia.org/wiki/Chmod

    chattr, the command used to change the attributes of a file or directory on Linux systems; chown, the command used to change the owner of a file or directory on Unix-like systems; chgrp, the command used to change the group of a file or directory on Unix-like systems; cacls, a command used on Windows NT and its derivatives to modify the access ...

  5. List of POSIX commands - Wikipedia

    en.wikipedia.org/wiki/List_of_POSIX_commands

    Change the file ownership PDP-7 UNIX cksum: Filesystem Mandatory Write file checksums and sizes 4.4BSD cmp: Filesystem Mandatory Compare two files; see also diff Version 1 AT&T UNIX comm: Text processing Mandatory Select or reject lines common to two files Version 4 AT&T UNIX command: Shell programming Mandatory Execute a simple command ...

  6. umask - Wikipedia

    en.wikipedia.org/wiki/Umask

    In computing, umask is a command that determines the settings of a mask that controls how file permissions are set for newly created files. It may also affect how the file permissions are changed explicitly. umask is also a function that sets the mask, or it may refer to the mask itself, which is formally known as the file mode creation mask.

  7. Repair permissions - Wikipedia

    en.wikipedia.org/wiki/Repair_permissions

    With it enabled, root privileges are no longer able to change system files and folders, including their permissions. Permissions repairs are instead performed automatically upon system installs and updates. [4] To that end, Disk Utility as well as the corresponding diskutil command-line utility lost the ability to repair permissions. [5]

  8. List of FTP commands - Wikipedia

    en.wikipedia.org/wiki/List_of_FTP_commands

    Accept the data and to store the data as a file at the server site STOU RFC 959 Store file uniquely. STRU RFC 959 Set file transfer structure. SYST RFC 959 Return system type. THMB Streamlined FTP Command Extensions: Get a thumbnail of a remote image file TYPE RFC 959 Sets the transfer mode (ASCII/Binary). USER RFC 959 Authentication username. XCUP

  9. Access-control list - Wikipedia

    en.wikipedia.org/wiki/Access-control_list

    A filesystem ACL is a data structure (usually a table) containing entries that specify individual user or group rights to specific system objects such as programs, processes, or files. These entries are known as access-control entries (ACEs) in the Microsoft Windows NT, [4] OpenVMS, and Unix-like operating systems such as Linux, macOS, and ...