some.sh

python_cmd() {
    basename $(command -v python3 || command -v python2)
}

package_manager() {
    pkg = $(command -v yum || command -v dnf)
    if [ "$(python_cmd)" == "python3" ]; then
        echo -n "$pkg -y --exclude=python2*"
    else
        echo -n "$pkg -y --exclude=python3*"
    fi
}

install_deps () {
    # If sudo isn't installed assume we already are a super user
    # install it anyways so that the install of the other deps succeeds
    sudo true || $(package_manager) install sudo
    sudo $(package_manager) install \
        /usr/bin/git \
        gcc \
        iproute \
        libyaml \
        libselinux-python \
        libffi-devel \
        openssl-devel \
        python*-virtualenv \
        redhat-rpm-config
}