Basic shell function to switch your GitHub repo remote URL from (https|ssh) to (ssh|https) respectively.

github_remote_switch.sh

# Basic shell function to switch your GitHub repo
# remote URL from (https|ssh) to (ssh|https) respectively.
# Tested with zsh and zprezto on macOS 10.12

github_ssh_to_https (){
    URL_PART=$("grep" "-Eo" "([A-z0-9-]+\/[A-z0-9-]+.git)" <<< $1)
    # echo $URL_PART
    NEW_URL="https://github.com/"
    NEW_URL+=$URL_PART
    
    git remote remove origin
    git remote add -mt origin $NEW_URL
    echo "Switched your GitHub repo to use https remote."
    echo $NEW_URL
}

github_https_to_ssh(){
    URL_PART=$("grep" "-Eo" "([A-z0-9-]+\/[A-z0-9-]+.git)" <<< $1)
    # echo $URL_PART
    NEW_URL="git@github.com:"
    NEW_URL+=$URL_PART
    
    git remote remove origin
    git remote add -mt origin $NEW_URL
    echo "Switched your GitHub repo to use ssh remote."
    echo $NEW_URL
}

github_remote_switch (){
    URL=$(git remote -v | tail -1 | awk '{ print $2 }')
    if [[ $URL == https* ]]
    then
        github_https_to_ssh $URL
    else
        github_ssh_to_https $URL
    fi
}