getpgrp man page on 4.4BSD

Man page or keyword search:  
man Server   1065 pages
apropos Keyword Search (all sections)
Output format
4.4BSD logo
[printable version]

GETPGRP(2)		    BSD System Calls Manual		    GETPGRP(2)

NAME
     getpgrp — get process group

SYNOPSIS
     #include <unistd.h>

     pid_t
     getpgrp(void);

DESCRIPTION
     The process group of the current process is returned by getpgrp().

     Process groups are used for distribution of signals, and by terminals to
     arbitrate requests for their input: processes that have the same process
     group as the terminal are foreground and may read, while others will
     block with a signal if they attempt to read.

     This call is thus used by programs such as csh(1) to create process
     groups in implementing job control.  The tcgetpgrp() and tcsetpgrp()
     calls are used to get/set the process group of the control terminal.

SEE ALSO
     setpgid(2), termios(4)

HISTORY
     The getpgrp function call appeared in 4.0BSD.

STANDARDS
     The getpgrp() function conforms to IEEE Std 1003.1-1988 (“POSIX”).

COMPATABILITY
     This version of getpgrp() differs from past Berkeley versions by not tak‐
     ing a pid_t pid argument.	This incompatibility is required by IEEE Std
     1003.1-1988 (“POSIX.1”).

     From the IEEE Std 1003.1-1988 (“POSIX.1”) Rationale:

     4.3BSD provides a getpgrp() function that returns the process group ID
     for a specified process.  Although this function is used to support job
     control, all known job-control shells always specify the calling process
     with this function.  Thus, the simpler System V getpgrp() suffices, and
     the added complexity of the 4.3BSD getpgrp() has been omitted from
     POSIX.1.

4.2 Berkeley Distribution	 June 4, 1993	     4.2 Berkeley Distribution
[top]

List of man pages available for 4.4BSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net