NAME

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

SEE ALSO

echo(1V), login(1), init(8), rc(8)

BUGS

The −v option is a kludge. 

Solbourne Computer, Inc.  —  28 Dec 1990