zsh.md

Cheatsheets

Lowercase the filename

for file in *.png; do mv $file ${file:l}; done

Uppercase the filename

for file in *.png; do mv $file ${file:u}; done

Uppercase the filename only (without extension)

for file in *.png; do mv $file ${file:t:r:u}; done

Uppercase the extension only (without filename)

for file in *.png; do mv $file ${file:t:e:u}; done