vercmp.sh

#!/bin/bash
#author: [e-mail]

usage() {
        echo "usage: $0   < =  | '>' | '<' | '>=' | '<=' >  " >&2
        echo "       $0   < eq | gt  | lt  |  ge  |  le  >  " >&2
        echo "       $0   < match >  <'pattern'>" >&2
}

sortV() {
        if echo | sort -V 2>/dev/null; then
                cat - | sort -V
        else
                cat - | sed -r -e "s/-([0-9]+\.)/.\1/" -e "s/-([0-9]+\.)/-.\1/" |
                        sort -t . -k1,1 -k2,2n -k3,3n -k4,4n -k5,5n -k6,6n |
                        sed -r -e "s/\./-/" -e "s/-\./-/"
        fi
}
vercmp() {
        [ $# != 3 ] && {
                usage
                return 1
        }
        vl=$1
        cmpType=$2
        vr=$3
        res=1

        [ "$vl" = "$vr" ] && eq=1
        vmax=$(echo -e "$vl\n$vr" | sortV | tail -n 1)

        case "$cmpType" in
        =|eq) [ "$eq" = 1 ] && res=0;;
        \>|gt) [ "$eq" != 1 -a "$vl" = "$vmax" ] && res=0;;
        \<|lt) [ "$eq" != 1 -a "$vr" = "$vmax" ] && res=0;;
        \>=|lt) [ "$vl" = "$vmax" ] && res=0;;
        \<=|lt) [ "$vr" = "$vmax" ] && res=0;;
        *) echo "$vl" | egrep -q "$vr"; res=$?;;
        esac

        return $res
}
vercmp "$@"