./_Man_SunOS_4.1.3_html/html8/intr.8.html

Manual page for INTR(8)

intr - allow a command to be interruptible

SYNOPSIS

intr [ -anv ] [ -t seconds ] command [ arguments ]

DESCRIPTION

intr executes command after altering the execution environment to make command to be interrutable.

Since interactive commands are by default interruptable, intr is intended for use as a wrapper around commands started by the /etc/rc files; commands spawned from these files are not interruptable by default. It has no other intended use than as a wrapper around /etc/rc commands.

The following signals are ignored as a result of wrapping intr around a command:

SIGTSTP: terminal generated stop signal
SIGTTIN: background read
SIGTTOU: background write

The following signals are reset to their default actions:

SIGINT: interrupt signal
SIGQUIT: quit signal

OPTIONS

-v: Echo the command in the form ' command' (note leading SPACE).
-a: Echo the command and its arguments.
-n: Do not echo a NEWLINE after the command or arguments (for example `echo -n ...').
-t secs: Arrange to have a SIGALRM signal delivered to the command in secs seconds.

EXAMPLES

All of these examples assume that they are in an /etc/rc file, that is, talking to the console, and not run interactively. The following example runs fsck.8 but allow it to be killed from the console:

: intr fsck -p -w / /usr

Echoing is provided so that

: ypbind; echo -n ' ypbind'

can be replaced with

: intr -vn ypbind

Timeouts are provided so that the machine will not hang at boot:

: intr -t 10 rdate date_host

BUGS

The -v option is a kludge.