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I have a bash script which serves as a driver basically. For some reason Ubuntu cannot assign the Bluetooth Serial port on it's own. The script's function is to connect up a bluetooth device, then assign it a place to be accessed in /dev/bluetooth serial. Finally, when the device is disconnected, or terminated by pressing "q", it kills the port.
I would like to know if there is some way to execute a command in a bash script when the ctrl-C is executed so that it does not leave the unusable device in place in my /dev folder
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To close an interactive command prompt, the keyboard shortcut ALT + F4 is an alternative to typing EXIT.
To end a shell script and set its exit status, use the exit command. Give exit the exit status that your script should have. If it has no explicit status, it will exit with the status of the last command run.
The -r tests if the file exists and if you have read permission on the file. Bash scripting tutorial - if statement. The meaning of -r depends on what program/command it is given as an argument for. In this case it is for [ , and means to check whether the file named by the next argument is readable.
Yep, you can use the 'trap' command. Hitting CTRL-C sends a SIGINT, so we can use trap to catch that:
#!/bin/bash
trap "echo hello world" INT
sleep 10
If you hit CTRL-C when this runs, it'll execute the command (echo hello world) :-)
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