process group ID using getpgrp (2). A child created by fork (2) inherits its parent ... faccessat (2), fork (2), getgroups (2), getpgrp (2), getpid (2), getppid (2), getsid (2), ki…getgid (2) getgroups (2) getpeername (2) getpgrp (2) getpid (2) getppid (2) getsockname (2) getsockopt