I'm looking for a way to automatically trigger a script or function whenever I encounter a 'command not found' error in Bash. I want this to work similarly to a tool like 'thefuck', but I prefer it to run without any manual input. For example, if I type a command that doesn't exist, I would like to have a function or script execute automatically, ideally with access to my command history. I've been searching for information on this, but most results seem irrelevant. Can anyone guide me on how to set this up?
1 Answer
Yes, you can achieve this by defining your own `command_not_found_handle()` function. Here’s a quick example:
```
command_not_found_handle() {
echo "
Hey there! You tried to run:
>>> "+$(printf '%q ' "$@")+"nbut that command doesn't exist. Would you like to try something from your history?"
history
}
```
This way, when you type a command that isn't recognized, it will trigger this function, displaying what you tried and listing your command history.
Make sure that your function handles the error exit status properly. Otherwise, it might lead to unexpected behavior in your scripts!