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Is there a way to trap Ctrl C in Bash?
Trapping ctrl-c in Bash. You can use the trap builtin to handle a user pressing ctrl-c during the execution of a Bash script. e.g. if you need to perform some cleanup functions.
Why does Bash not exit when I press Ctrl-C?
So, when you press Ctrl-C while ping is running, bash notes that you’ve pressed Ctrl-C in its SIGINT handlers, but since ping exits normally, bash does not exit.
When to use the trap builtin in Bash?
You can use the trap builtin to handle a user pressing ctrl-c during the execution of a Bash script. e.g. if you need to perform some cleanup functions.
Is there a way to stop a bash script?
Then, the subshell process continues executing the next command in the loop, that starts another process. To be able to stop the script it is necessary to send two SIGINT signals, one to interrupt the current command in execution and one to interrupt the subshell process.
How to catch Ctrl-C in shell script?
This function will be called when a Ctrl-C sequence is detected. Any cleanup can be performed in this function. Note the exit statement within the function. Without this statement, the shell script will continue execution. Second, the trap command is initialised with the function name and the signal to catch in line 18.
Why does Ctrl + C not work in Bash?
When the user uses Ctrl + C, I want it to continue reading the input and executing other commands. The problem is that when I use a command like: It doesn’t work after I type Ctrl + C one time, but it works once I type it several times.
Why do I need to use Ctrl + C when using read?
I’m trying to execute commands inside a script using read, and when the user uses Ctrl + C, I want to stop the execution of the command, but not exit the script. Something like this: When the user uses Ctrl + C, I want it to continue reading the input and executing other commands.
What is the syntax for the trap command?
The syntax for the trap command is “trap COMMAND SIGNALS…”, so unless the command you want to execute is a single word, the “command” part should be quoted. If your cleanup needs are complex, you don’t have to try to jam it all into a string with semicolons, just write a function: