yakyak_update_osx.sh

#!/bin/bash
if [ -a /Applications/YakYak.app/Contents/Info.plist ]
        then
        YAK_INSTALLED=1
        YAK_CUR_VERS=$(cat /Applications/YakYak.app/Contents/Info.plist | grep -A1 CFBundleVersion | grep '<string' | cut -f2 -d">"|cut -f1 -d"<" | tr -d '.')
        else
        YAK_INSTALLED=0
        YAK_CUR_VERS=0
fi
YAK_STABLE_VERS=$(curl -sL https://github.com/yakyak/yakyak/releases/latest | grep -we "yakyak/yakyak/releases/download/.*/yakyak-osx.app.zip" | awk -F'\/' '{print $6}' | tr -d '.' | tr -d 'v')
YAK_URL="https://github.com/yakyak/yakyak/releases/download/${YAK_VERS}/yakyak-osx.app.zip"
echo "Installed version: ${YAK_CUR_VERS}"
echo "Latest Available: ${YAK_STABLE_VERS}"
if [ "$YAK_STABLE_VERS" -gt "$YAK_CUR_VERS" ]
then
    read -r -p "Upgrade? [y/N] " response
    case $response in
        [yY][eE][sS]|[yY])
        YAK_ZIP="$HOME/Downloads/yakyak-latest.zip"
        curl -s ${YAK_ULR} -o $YAK_ZIP
        unzip $YAK_ZIP
        mv -v $HOME/YakYak.app /Applications/
            ;;
        *)
            echo "ABORTED!"
        ;;
    esac
else
    echo "Up to date, nothing to do."
fi