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The tty command is commonly used to check if the output medium is a terminal. The command prints the file name of the terminal connected to standard input. If no file is detected (in case, it's being run as part of a script or the command is being piped) "not a tty" is printed to stdout and the command exits with an exit status of 1.
The command is available as a separate package for Microsoft Windows as part of the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities. [2] The FreeDOS version was developed by M. Aitchison. [3] A tail command is also part of ASCII's MSX-DOS2 Tools for MSX-DOS version 2. [4] CCZE is tail-like while displaying its output ...
dirname is a standard computer program on Unix and Unix-like operating systems.When dirname is given a pathname, it will delete any suffix beginning with the last slash ('/') character and return the result.
LinuxLinks named it one of the "10 Best Orthodox Free Linux File Managers", and one of its "5 Top Console Linux File Managers". [ 20 ] [ 21 ] It is often cited in magazine articles and software blogs for power users as an illustration of the power and versatility of the command line interface.
The following worked example discusses the behavior of a Unix-style file system as it would appear from a terminal or terminal application (command-line window): Attached to a current working directory (cwd) of: /users/mark/ One wants to change the current working directory to: /users/mark/bobapples
Commands with long or difficult to spell filenames can be entered by typing the first few characters and pressing a completion key, which completes the command or filename. In the case of multiple possible completions, some command-line interpreters, especially Unix shells, will list all possible completions beginning with those few characters.
Controls buffering for commands that use stdio stty: Changes and prints terminal line settings tee: Sends output to multiple files test: Evaluates an expression timeout: Run a command with a time limit true: Does nothing, but exits successfully tty: Prints terminal name uname: Prints system information unlink: Removes the specified file using ...
Execute commands at a later time Version 7 AT&T UNIX awk: Text processing Mandatory Pattern scanning and processing language Version 7 AT&T UNIX basename: Filesystem Mandatory Return non-directory portion of a pathname; see also dirname Version 7 AT&T UNIX batch: Process management Mandatory Schedule commands to be executed in a batch queue bc ...