Ignore/Disable Ctrl-C (SIGINT) in a shell script

dctw · 01-06-2010, 01:31 AM

How do I write my trap statement in shell script to ignore SIGINT.
Reason being is that the script is used to update records in database. I want to avoid inconsistency in database when user presses Ctrl-C ...

The result should be
1. Totally ignore Ctrl-C (SIGINT) when user presses Ctrl-C
2. Continue with the rest of processing

choogendyk · 01-06-2010, 02:35 AM

trap is what you want.

see, for example, http://linuxdevcenter.com/pub/a/linux/lpt/44_12.html.

ForzaItalia2006 · 01-06-2010, 04:51 AM

Hey,

try this:

trap "" 2

The number 2 stands for SIGINT (CTRL+C). This should then ignore the interrupt, at least bourne shell (sh) and bash :-)

- Andi -

dctw · 01-11-2010, 02:30 AM

It does not work..
The database still interrupts the operation when I press Ctrl-C

I think it is due to the handling within the database software, not on the shell ....