For a list of files, I'd like to match the ones not ending with .txt. I am currently using this expression:
.*(txt$)|(html\.txt$)
This expression will match everything ending in .txt, but I'd like it to do the opposite.
Should match:
happiness.html
joy.png
fear.src
Should not match:
madness.html.txt
excitement.txt
I'd like to get this so I can use it in pair with fswatch:
fswatch -0 -e 'regex here' . | xargs -0 -n 1 -I {} echo "{} has been changed"
The problem is it doesn't seem to work.
PS: I use the tag bash instead of fswatch because I don't have enough reputation points to create it. Sorry!
Since question has been tagged as bash, lookaheads may not be supported (except grep -P), here is one grep solution that doesn't need lookaheads:
grep -v '\.txt$' file
happiness.html
joy.png
fear.src
EDIT: You can use this xargs command to avoid matching *.txt files:
xargs -0 -n 1 -I {} bash -c '[[ "{}" == *".txt" ]] && echo "{} has been changed"'