Add package install to bash script

package_to_install

package_to_install () {
# enter the package you want installed in PKG_NAME below
PKG_NAME="<PACKAGE_NAME>"
if ! type $PKG_NAME > /dev/null 2>&1; then
# check Linux package manager (yum or apt)
declare -A osInfo;
osInfo[/etc/redhat-release]=yum
osInfo[/etc/arch-release]=pacman
osInfo[/etc/gentoo-release]=emerge
osInfo[/etc/SuSE-release]=zypp
osInfo[/etc/debian_version]=apt
osInfo[/etc/lsb-release]=apt

for f in "${!osInfo[@]}"
  do
     if [[ -f $f ]];then
         sudo ${osInfo[$f]} install "$PKG_NAME"
     fi
  done
fi
}