Automatically find and 'update-alternatives --install' installed clang versions

update-alternatives-clang.sh

#!/bin/bash

BIN=/usr/bin
MAN=/usr/share/man/man1

function register_clang_version {
    BINV=$1
    PRIORITY=`echo $BINV | awk '{print int($1 * 10)}'`
    update-alternatives --install $BIN/clang clang $BIN/clang-$BINV $PRIORITY \
        --slave $BIN/clang++ clang++ $BIN/clang++-$BINV
}

versions=`compgen -c clang++- | cut -d- -f 2`
echo Found clang versions: $versions

for version in $versions; do
    echo Installing $version
    register_clang_version $version
done