Name
getpgrp
Synopsis
getpgrp pid
Returns the current process group for the specified
process ID (pid). Use a
pid of 0 for the current process. Invoking
getpgrp will produce a fatal
error if used on a machine that doesn’t implement the getpgrp system call. If
pid is omitted, the function returns
the process group of the current process (the same as using a
pid of 0). On systems implementing this
operator with the POSIX getpgrp(2) system call,
pid must be omitted or, if supplied,
must be 0.
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