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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.
As a command-line interface (CLI), Bash operates within a terminal emulator, or text window, where users input commands to execute various tasks. It also supports the execution of commands from files, known as shell scripts, facilitating automation. In keeping with Unix shell conventions, Bash incorporates a rich set of features.
Ubuntu 11.04 Linux GNU/Linux x86_64 x86_64 x86_64 #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011 2.6.38-10-generic Ubuntu 12.0.4 on Pandaboard ES: Linux GNU/Linux armv7l armv7l armv7l #33-Ubuntu SMP PREEMPT Sat Jan 26 00:46:04 UTC 2013 3.2.0-1425-omap4 Ubuntu 20.0.4LTS on Raspberry Pi 4 Model B Linux GNU/Linux aarch64 aarch64 aarch64
Ubuntu Touch Mobian [1] Plasma Mobile PureOS PostmarketOS; Developed by Google, Open Handset Alliance: Apple Inc. Huawei: Linux Foundation, Tizen Association, Samsung, Intel: KaiOS Technologies Inc. Sailfish Alliance, Mer, Jolla and Sailfish community contributors: UBports and Ubuntu community contributors (previously Canonical Ltd.) Debian on ...