JezK
Edit File: update-java-alternatives
#! /bin/bash shopt -s dotglob prog=$(basename $0) usage() { rv=$1 cat >&2 <<-EOF usage: $prog [--jre-headless] [--jre] [--plugin] [-v|--verbose] -l|--list [<jname>] -s|--set <jname> -a|--auto -h|-?|--help EOF exit $rv } action= uaopts='--quiet' while [ "$#" -gt 0 ]; do case "$1" in -a|--auto) [ -z "$action" ] || usage 1 action=auto;; -hl|--jre-headless) hlonly=yes;; -j|--jre) jreonly=yes;; --plugin) pluginonly=yes;; -l|--list) [ -z "$action" ] || usage 1 action=list if [ "$#" -gt 0 ]; then shift jname=$1 fi ;; -s|--set) [ -z "$action" ] || usage 1 action=set shift [ "$#" -gt 0 ] || usage 1 jname=$1 ;; -v|--verbose) verbose=yes uaopts="${uaopts/--quiet/}";; -h|-?|--help) usage 0;; -*) echo "X: $1" usage 1;; *) break;; esac shift done [ "$#" -eq 0 ] || usage 1 [ -n "$action" ] || usage 1 which='^(hl|jre|jdk|jdkhl|plugin|DUMMY) ' if [ -n "$hlonly$jreonly$pluginonly" ]; then which='^(' [ -n "$hlonly" ] && which="${which}hl|" [ -n "$jreonly" ] && [ -n "$hlonly" ] && which="${which}jre|" [ -n "$jreonly" ] && [ -z "$hlonly" ] && which="${which}hl|jre|" [ -n "$pluginonly" ] && which="${which}plugin|" which="${which}DUMMY) " fi top=/usr/lib/jvm if [ -n "$jname" ]; then arch=$(dpkg --print-architecture) if [ ! -x $top/$jname/bin/java ] && [ -x $top/$jname-$arch/bin/java ]; then echo >&2 "$prog: obsolete <jname>, please use $jname-$arch instead" jname=$jname-$arch fi case "$jname" in /*) jdir=$jname; jname=$(basename $jdir);; *) jdir=$top/$jname esac if [ ! -d $jdir ]; then echo >&2 "$prog: directory does not exist: $jdir" exit 1 fi if [ -f $top/.$jname.jinfo ]; then jinfo=$top/.$jname.jinfo elif [ -f $top/$jname.jinfo ]; then jinfo=$top/$jname.jinfo else echo >&2 "$prog: file does not exist: $top/.$jname.jinfo" exit 1 fi fi vecho() { [ -z "$verbose" ] || echo >&2 "$@" } jinfo_files= do_auto() { vecho "resetting java alternatives" awk "/$which/ {print \$2}" $top/*.jinfo | sort -u \ | \ while read name; do update-alternatives $uaopts --auto $name done } do_list() { vecho "listing java alternatives:" for i in ${jinfo:-$top/*.jinfo}; do alias=$(basename ${i%.jinfo}) alias=${alias#.} prio=$(awk -F= '/priority=/ {print $2}' $i) printf "%-30s %-10s %s\n" $alias "$prio " $top/$alias [ -n "$verbose" ] && egrep "$which" $i done } do_set() { do_auto awk "/$which/ {print}" $jinfo | sort -u \ | \ while read type name location; do if [ $type = jdk -a -z "$hlonly$jreonly$pluginonly" -a ! -f $location ]; then echo >&2 "$prog: jdk alternative does not exist: $location" continue fi if [ $type = plugin -a -z "$hlonly$jreonly" -a ! -f $location ]; then echo >&2 "$prog: plugin alternative does not exist: $location" continue fi update-alternatives $uaopts --set $name $location done } if [ "$action" != list ] && [ "$(id -u)" -ne 0 ]; then echo >&2 "$prog: no root privileges" exit 1 fi do_$action exit 0