get-destros.sh

#!/bin/bash

get_distribution_type()
{
    local dtype
    # Assume unknown
    dtype="unknown"

    # First test against Fedora / RHEL / CentOS / generic Redhat derivative
    if [ -r /etc/rc.d/init.d/functions ]; then
        source /etc/rc.d/init.d/functions
        [ zz`type -t passed 2>/dev/null` == "zzfunction" ] && dtype="redhat"

    # Then test against SUSE (must be after Redhat,
    # I've seen rc.status on Ubuntu I think? TODO: Recheck that)
    elif [ -r /etc/rc.status ]; then
        source /etc/rc.status
        [ zz`type -t rc_reset 2>/dev/null` == "zzfunction" ] && dtype="suse"

    # Then test against Debian, Ubuntu and friends
    elif [ -r /lib/lsb/init-functions ]; then
        source /lib/lsb/init-functions
        [ zz`type -t log_begin_msg 2>/dev/null` == "zzfunction" ] && dtype="debian"

    # Then test against Gentoo
    elif [ -r /etc/init.d/functions.sh ]; then
        source /etc/init.d/functions.sh
        [ zz`type -t ebegin 2>/dev/null` == "zzfunction" ] && dtype="gentoo"

    # For Slackware we currently just test if /etc/slackware-version exists
    # and isn't empty (TODO: Find a better way :)
    elif [ -s /etc/slackware-version ]; then
        dtype="slackware"
    fi
    echo $dtype
}

get_distribution_type