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#1
July 7th, 2004, 01:00 AM
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Changing variable value in trap
Hi,
I was trying to change a value of a variable in trap like this trap 'display_prev_menu; start=1' 1 2 3 6 15 20 But itseems like the value doesn't actually get set to 1. It stays as what ever it was before. Can anyone help me with this pls. Thanx
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#2
July 7th, 2004, 04:35 AM
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I am able to get it.
Code:
#!/bin/sh
# FILE NAME : tmpr.sh
display_prev_menu()
{
start=12
echo display_prev_menu : $start
}
start=100
echo "start initial value: " $start
trap 'display_prev_menu;start=1;echo Trap start value : $start' 1 2 3 6 15 20
kill `ps -ex | grep tmpr.sh | grep -v grep | awk '{print $1}'`
My guess is that the start variable might have been changed at some other location in your script. To check whether it has been set / not, try echo within the trap itself.
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