File commands in the terminal

commands.md

jpg

$ brew install jpegoptim
$ find . -name "*.jpg" -exec jpegoptim -m80 -o -p --strip-all {} \;

png

$ brew install optipng
$ find . -name "*.png" -exec optipng -o7 {} \;

mp4 to mp3

$ brew install ffmpeg
$ find . -name "*.mp4" -exec ffmpeg -i {} {}.mp3 \;

wav to mp3 (windows batch?)

$ for i in *.wav; do lame -b 320 -h "${i}" "${i%.wav}.mp3"; done