silent pushd (aliased to cd)

cd.sh

function cd {
    if (("$#" > 0)); then
        if [ "$1" == "-" ]; then
            builtin popd >/dev/null
        elif [ "$1" == "--" ]; then
            dirs -v
            return $?
        elif [ "$1" == "." ]; then
            # break out of symlinked dir (cd into realpath)
            builtin pushd "`pwd -P`" >/dev/null
        else
            builtin pushd "$@" >/dev/null
        fi
    else
        builtin cd "$HOME" >/dev/null
    fi
    [ $# -ne 0 ] && builtin cd "$1"
    pwd
}