tool 설치 시 버전 확인

$ cat run.sh 
#/bin/bash
# $1 - new version to compare
 
which automake >/dev/null
if [ $? -eq 0 ]; then
        VER=$(automake --version | grep ^automake | cut -d' ' -f4)
 
        HVER=$(echo -e "$VER\n$1" | sort -V | tail -1)
        if [ $VER = $HVER ] ; then
                echo "automake is up to date [$VER vs $1]"
                exit 0;
        else
                echo "automake is too old [$VER vs $1]"
                # remove old automake here
        fi
fi
 
# install automake here
 
 
exit 0
 
$ ./run.sh 1.16.4
automake is up to date [1.16.5 vs 1.16.4]
$ ./run.sh 1.16.5
automake is up to date [1.16.5 vs 1.16.5]
$ ./run.sh 1.16.6
automake is too old [1.16.5 vs 1.16.6]