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A terminal mode is one of a set of possible states of a terminal or pseudo terminal character device in Unix-like systems and determines how characters written to the terminal are interpreted. In cooked mode data is preprocessed before being given to a program, while raw mode passes the data as-is to the program without interpreting any of the ...
Return user's terminal name Version 1 AT&T UNIX type: Misc Optional (XSI) Displays how a name would be interpreted if used as a command ulimit: Misc Optional (XSI) Set or report file size limit umask: Misc Mandatory Get or set the file mode creation mask System III unalias: Misc Mandatory Remove alias definitions uname: Misc Mandatory Return ...
The Linux console (and Linux virtual consoles) are implemented by the VT (virtual terminal) subsystem of the Linux kernel, and do not rely on any user space software. [3] This is in contrast to a terminal emulator , which is a user space process that emulates a terminal, and is typically used in a graphical display environment.
A block-oriented terminal or block mode terminal is a type of computer terminal that communicates with its host in blocks of data, as opposed to a character-oriented terminal that communicates with its host one character at a time. A block-oriented terminal may be card-oriented, display-oriented, keyboard-display, keyboard-printer, printer or ...
A pseudoterminal ("pseudo TTY" or "PTY") is a pair of pseudo-devices – a slave and a master – that provide a special sort of communication channel. The slave pseudo-device emulates a physical computer text terminal (like, e.g. the DEC VT100) it can read and write text as though it was such a physical terminal.
The other pseudo-device, the slave, emulates a hardware serial port device, [1] and is used by terminal-oriented programs such as shells (e.g. bash) as a processes to read/write data back from/to master endpoint. [1] PTYs are similar to bidirectional pipes. [3]: 1388 Devpts is a Linux kernel virtual file system containing pseudoterminal devices.
The terminal interface provided by Unix 32V and Seventh Edition Unix, and also presented by BSD version 4 as the old terminal driver, was a simple one, largely geared towards teletypewriters as terminals. Input was entered a line at a time, with the terminal driver in the operating system (and not the terminals themselves) providing simple line ...
The termcap (for "terminal capabilities") library was developed for BSD systems. It uses a database stored in the file /etc/termcap.This database consists of a series of records (each of which consists of one or more lines in the file, joined by backslash characters at the ends of each line that continues onto a following one) each of which represents the capabilities of a particular terminal.