added default jvm scriptv1.6

2 files changed, 54 insertions, 0 deletions

diff --git a/Makefile b/Makefile
index f616fc6..6838547 100755
--- a/Makefile
+++ b/Makefile
@@ -66,3 +66,8 @@ install-chroot: src/xichroot.sh
 	install -Dm755 src/xichroot.sh ${DESTDIR}${PREFIX}/bin/xichroot
 
 
+# default-jvm
+#
+install-chroot: src/default-jvm.sh
+	install -Dm755 src/default-jvm.sh ${DESTDIR}${PREFIX}/bin/default-jvm
+
diff --git a/src/default-jvm.sh b/src/default-jvm.sh
new file mode 100755
index 0000000..96f4f68
--- /dev/null
+++ b/src/default-jvm.sh
@@ -0,0 +1,49 @@
+#!/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
+            ;;
+        *)
+            link $1 \
+            || link $JVM_DIR/$1 \
+            || get
+            ;;
+    esac
+}
+