/usr/bin/timeout

Start COMMAND, and kill it if still running after DURATION.

Usage: timeout [OPTION] DURATION COMMAND...

Arguments:
  <duration>    a floating point number with an optional suffix: 's' for seconds (the default), 'm'
                for minutes, 'h' for hours or 'd' for days ; a duration of 0 disables the associated
                timeout
  <command>...  a command to execute with optional arguments

Options:
  -f, --foreground               when not running timeout directly from a shell prompt, allow
                                 COMMAND to read from the TTY and get TTY signals; in this mode,
                                 children of COMMAND will not be timed out
  -k, --kill-after <kill-after>  also send a KILL signal if COMMAND is still running this long after
                                 the initial signal was sent
  -p, --preserve-status          exit with the same status as COMMAND, even when the command times
                                 out
  -s, --signal <SIGNAL>          specify the signal to be sent on timeout; SIGNAL may be a name like
                                 'HUP' or a number; see 'kill -l' for a list of signals
  -v, --verbose                  diagnose to stderr any signal sent upon timeout
  -h, --help                     Print help
  -V, --version                  Print version

Upon timeout, send the TERM signal to COMMAND, if no other SIGNAL specified. The TERM signal kills
any process that does not block or catch that signal. It may be necessary to use the KILL signal,
since this signal can't be caught.

Exit status:
  124  if COMMAND times out, and --preserve-status is not specified
  125  if the timeout command itself fails
  126  if COMMAND is found but cannot be invoked
  127  if COMMAND cannot be found
  137  if COMMAND (or timeout itself) is sent the KILL (9) signal (128+9)
  -    the exit status of COMMAND otherwise