INTR(8) System Manager's Manual INTR(8)
NAME
intr - run a command with interrupts enabled
SYNOPSIS
intr [-d] [-t seconds] command [arg...]
DESCRIPTION
Intr executes a command with keyboard interrupts enabled, and standard
input, output and error redirected to the terminal or the console. It
may also be used for the opposite: to detach a process from the termi-
nal.
There are three situations where intr may be used: From a process that
has no controlling tty, like the shell running /etc/rc at boot time,
from a script that runs in the background, or by the System Administra-
tor to restart a daemon.
In the first case intr will use /dev/console as a controlling tty and
as standard input, output and error. In the second case intr will use
/dev/tty to connect the command to the controlling tty. In the third
case the process will be removed from the process group, and will have
I/O redirected to /dev/null as input, and /dev/log for output.
OPTIONS
-d Daemonize a process instead of bringing it to the foreground.
Don't forget to use '&' to make the shell not wait for the
process, because you won't be able to kill it with the interrupt
key.
-t seconds
Schedule an alarm to kill the process in the given number of
seconds. Use it for a process that may wait indefinitely for a
service that may not be available.
FILES
/dev/console Main computer console.
/dev/log Message logging device.
/dev/tty Name for the controlling tty.
SEE ALSO
boot(8), tty(4), setsid(2), alarm(2).
BUGS
Maybe intr -d should fork to daemonize a process, but the author likes
it if the process stays in the jobs list of his shell.
AUTHOR
Kees J. Bot (
[email protected])
INTR(8)