Capturing CTRL + C

[Amrit_1]

Hi,

I would like to catch the signal ctrl + C(SIGINIT). Please could you let me know the corresponding value for this.

Also, I would be following the approach that needs to be implemented should be as follows: trap "numeric value". Is this the correct approach

[Hoefnix · Accepted solution]

trap 2 would do the job

[Mark Grant]

Nearly,

If you are talking about a shell script it would be

trap "command" 2

The command will be executed when signal 2 is received. If you leave it blank (you still need the quotes) then the script will ignore SIGINT.

[Hoefnix]

Yep, mark is correct. The command should be filled in. If you want to use for not braking out of a script use: trap "" 2
Then it would perform your script without braking at control-C.

[Tor-Arne Nostdal]

It depends on which shell is used.

trap is correct for korn/bourne/posix shell, but in csh you use onintr.

#!/usr/bin/csh
onintr CTRLC

LOOP:
echo 'Continue Until \c'
read DUMMY
goto LOOP

CTRLC:
echo "You pressed Ctrl+C"
exit
--------------------------------------
#!/usr/bin/sh
trap CTRLC 2
function CTRLC
{
print "You pressed Ctrl+C"
exit
}

while true
do
print 'Continue Until \c'
read DUMMY
done

/Tor-Arne