Read or set process properties.
kill(pid, signal = SIGTERM, verbose = FALSE)setuid(uid, verbose = FALSE)
getuid()
setgid(gid, verbose = FALSE)
getgid()
setpgid(verbose = FALSE)
getpgid()
setpriority(prio, verbose = FALSE)
getpriority()
process ID
kill signal
emit some debugging output in C
user ID
group ID
priority value
Ubuntu Manpage: kill - send signal to a process. http://manpages.ubuntu.com/manpages/precise/man2/kill.2.html.