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 $$”.
# 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