OSX bash function and alias to remove hidden directories from zip files

osx-dsclean

$ nano ~/.bash_rc

function dsclean() {
  if [ -f $1 ]
  then
    echo "Delete __MACOSX folder from $1"
    zip -d "$1" __MACOSX*
    echo "Delete all .DS_Store folders from $1"
    zip -d "$1" \*.DS_Store
  fi
}

-----

$ nano ~/.bash_profile

if [ -f ~/.bash_rc ]
then . ~/.bash_rc
fi

alias dsclean='dsclean';

Run from terminal and specify the zip file to process:

$ dsclean files.zip

You can also use OSX apps like Keka and YemuZip