Linux cli command getpt

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command getpt and provides detailed information about the command getpt, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the getpt.

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NAME 🖥️ getpt 🖥️

open a new pseudoterminal master

LIBRARY

Standard C library (libc, -lc)

SYNOPSIS

#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
int getpt(void);

DESCRIPTION

getpt() opens a new pseudoterminal device and returns a file descriptor that refers to that device. It is equivalent to opening the pseudoterminal multiplexor device

open("/dev/ptmx", O_RDWR);

on Linux systems, though the pseudoterminal multiplexor device is located elsewhere on some systems that use the GNU C library.

RETURN VALUE

getpt() returns an open file descriptor upon successful completion. Otherwise, it returns -1 and sets errno to indicate the error.

ERRORS

getpt() can fail with various errors described in open(2).

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue

getpt()

Thread safetyMT-Safe

VERSIONS

Use posix_openpt(3) instead.

STANDARDS

GNU.

HISTORY

glibc 2.1.

SEE ALSO

grantpt(3), posix_openpt(3), ptsname(3), unlockpt(3), ptmx(4), pty(7)

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