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|man pages section 2: System Calls Oracle Solaris 11 Information Library|
- set process group ID
#include <sys/types.h> #include <unistd.h> pid_t setpgrp(void);
If the calling process is not already a session leader, the setpgrp() function makes it one by setting its process group ID and session ID to the value of its process ID, and releases its controlling terminal. See Intro(2) for more information on process group IDs and session leaders.
The setpgrp() function returns the value of the new process group ID.
No errors are defined.
See attributes(5) for descriptions of the following attributes: