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Index: U
- uid (see users)
- ul command: Alphabetical Summary of Commands
- ulimit command (bash): Built-in Commands
- umask command (bash): Built-in Commands
- umask command (csh/tcsh): Built-in csh and tcsh Commands
- umount command: Alphabetical Summary of Commands
- unabbreviate command (ex): Alphabetical Summary of ex Commands
- unalias command (bash): Built-in Commands
- unalias command (csh/tcsh): Built-in csh and tcsh Commands
- uncomplete command (tcsh): Built-in csh and tcsh Commands
- uncompress command: Alphabetical Summary of Commands
- uncompressing (see compression, file)
- underscores/underlining: Alphabetical Summary of Commands
- undo command (ex): Alphabetical Summary of ex Commands
- undoing, Emacs commands for: Stopping and Undoing Commands
- unedit command (CVS): unedit
- unexpand command: Alphabetical Summary of Commands
- unhash command (csh/tcsh): Built-in csh and tcsh Commands
- uniq command: Alphabetical Summary of Commands
- Unix: The Excitement of Linux
- unlimit command (csh/tcsh): Built-in csh and tcsh Commands
- unloading modules: Alphabetical Summary of Commands
- unmap command (ex): Alphabetical Summary of ex Commands
- unmounting filesystems: Alphabetical Summary of Commands
- unset command (bash): Built-in Commands
- unset command (csh/tcsh): Built-in csh and tcsh Commands
- unseten command (csh/tcsh): Built-in csh and tcsh Commands
- unsetenv command (csh/tcsh): Built-in csh and tcsh Commands
- unshar command: Alphabetical Summary of Commands
- unstr command: Alphabetical Summary of Commands
- until command (bash): Built-in Commands
- up|upd commands (CVS) (see update command (CVS))
- update command: Alphabetical Summary of Commands
- update command (CVS): update
-
- status codes: update
- Update.prog file (CVS): CVS directories
- uppercase (see case)
- UPS (Uninterruptible Power Supply): Alphabetical Summary of Commands
- uptime command: Alphabetical Summary of Commands
- URL handlers, setting (GNOME): URL handlers
- URL links
-
- GNOME desktop, adding to: Adding Desktop Icons
- KDE desktop, adding to: Adding a Link to the Desktop
- setting colors for: File manager
- User Agent tab, KDE Control Center: Web browser
- user groups: Linux User Groups
- user interface settings, GNOME: User Interface
- User menu, GNOME: The Main Menu
- useradd command: Alphabetical Summary of Commands
- userdel command: Alphabetical Summary of Commands
- usermod command: Alphabetical Summary of Commands
- usernames: Alphabetical Summary of Commands
- users
-
- administration commands for: Users
- changing group identification of: Alphabetical Summary of Commands
- creating: Alphabetical Summary of Commands
- deleting: Alphabetical Summary of Commands
- finger command: Alphabetical Summary of Commands
- getting information about: Alphabetical Summary of Commands
- groups, displaying: Alphabetical Summary of Commands
- listing: Alphabetical Summary of Commands
- logged-in, report on: Alphabetical Summary of Commands
- logging in: Alphabetical Summary of Commands
- NIS accounts: NIS User Accounts
- notifying of incoming mail: Alphabetical Summary of Commands
- sending messages to: Alphabetical Summary of Commands
- on specific host, listing: Alphabetical Summary of Commands
- su command: Alphabetical Summary of Commands
- talking to: Alphabetical Summary of Commands
- user ID: Alphabetical Summary of Commands
- writing to: Alphabetical Summary of Commands
- users command: Alphabetical Summary of Commands
- users file (CVS): The users file
- usleep command: Alphabetical Summary of Commands
- uudecode command: Alphabetical Summary of Commands
- uuencode command: Alphabetical Summary of Commands
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