Bash Shell Scripting Disable Control-C [ CTRL+C ] Keys

I want to disable Control-C while running shell bash script program under UNIX / Linux like operating systems. How do I disable Control-C?

You need to use the trap command which can enable or disable keyboard keys such as Crtl-C. SIGINT is Crtl-C and it is represented using number 2. Signal names are case insensitive and the SIG prefix is optional. trap -l prints list of signal names and their corresponding numbers. Note that a signal can be sent to the shell with "kill -signal $$".

Syntax

# Signal 2 is Ctrl+C
# Okay disable it:
trap '' 2
command1
command2
command3
# Enable Ctrl+C
trap 2

Here is a sample shell script:

#!/bin/bash
trap '' 2
echo "This is a test. Hit [Ctrl+C] to test it..."
sleep 20
trap 2

Featured Articles:

• 20 Linux System Monitoring Tools Every SysAdmin Should Know
• My 10 UNIX Command Line Mistakes
• 10 Greatest Open Source Software Of 2009
• Top 5 Email Client For Linux, Mac OS X, and Windows Users
• Top 20 OpenSSH Server Best Security Practices
• Top 10 Open Source Web-Based Project Management Software
• Top 5 Linux Video Editor Software