Can I completely abort command execution? about bash-preexec HOT 5 CLOSED

I added this functionality in #35.

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@frozenminds thanks for opening. I'm not positive off hand how you'd do this, but @brandonweeks might have some idea. Perhaps via extdebug as was mentioned in the previous PR.

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Maybe this will help:

$ source ~/.bash-preexec.sh
$ precmd() { echo "printing the prompt"; }
$ preexec() { if [[ $SKIP = "true" ]]; then return 1; fi; }
printing the prompt
$ shopt -s extdebug
printing the prompt
$ echo 1
1
printing the prompt
$ SKIP=true
printing the prompt
$ echo 1
printing the prompt
$

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LOL looking back, that may be a bad example as it then renders that bash session useless as you can't unset SKIP to be false ;-(

Using this may be better as an example:

source ~/.bash-preexec.sh
preexec() { if echo "$1" | egrep -q "^ls$" ; then return 1 ; fi ; }
shopt -s extdebug
ls -al
ls

This disables the "ls" command, but allows "ls -al" to work.

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@richard-scott Thanks for the example! 👍
@frozenminds going to close this out as Rich's example looks sufficient. Feel free to reopen or start a new issue if you have any other questions/problems.

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