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#!/bin/sh
JVM_DIR=/usr/lib/jvm
JAVA_BIN=/bin/java
usage () {
cat << EOF
xilinux-java
Print the name of the currently linked jvm
non-zero exit code if none is linked
xilinux-java [name]
create symlinks to /usr/lib/jvm/[name]/bin to /bin
xilinux-java [-l]
list installed JVMs
EOF
}
get () {
[ -h "$JAVA_BIN" ] && {
path=$(readlink "$JAVA_BIN")
path=${path%%/bin/java}
path=${path##*/}
echo $path
}
}
link () {
[ -d "$1" ] && for bin in $1/bin/*; do
ln -sf $bin /bin/${bin##*/}
done
}
[ "$#" = "0" ] && {
get || return 1
} || {
case "$1" in
"-l"|"--list")
ls -1 $JVM_DIR
;;
"-h"|"--help")
usage
;;
*)
link $1 \
|| link $JVM_DIR/$1 \
|| get
;;
esac
}
|
