Intelligent sorter

Method 1?

YUM_CMD=$(which yum)
APT_GET_CMD=$(which apt-get)
OTHER_CMD=$(which <other installer>


 if [[ ! -z $YUM_CMD ]]; then
    yum install $YUM_PACKAGE_NAME
 elif [[ ! -z $APT_GET_CMD ]]; then
    apt-get $DEB_PACKAGE_NAME
 elif [[ ! -z $OTHER_CMD ]]; then
    $OTHER_CMD <proper arguments>
 else
    echo "error can't install package $PACKAGE"
    exit 1;
 fi

Method 2?

#!/bin/bash
# Find our package manager
if VERB="$( which apt-get )" 2> /dev/null; then
   echo "Debian-based"
elif VERB="$( which yum )" 2> /dev/null; then
   echo "Modern Red Hat-based"
elif VERB="$( which portage )" 2> /dev/null; then
   echo "Gentoo-based"
elif VERB="$( which pacman )" 2> /dev/null; then
   echo "Arch-based"
else
   echo "I have no idea what I'm doing." >&2
   exit 1
fi
if [[ 1 -ne $# ]]; then
   echo "Syntax: $0 PACKAGE"
   exit 1
fi
$VERB "$1"
exit $?

Method 3?

https://github.com/icy/pacapt