- avoid calling file(1) on empty list (in case .jar contains no .class)

Changed files:
    find-java-req.sh -> 1.9

diff --git a/find-java-req.sh b/find-java-req.sh
index 8f800cbebecacc3cd691bffad3356425e0e468a7..0994ebdbbc192cfc8f2f7535ce3f57bb3fc16079 100755 (executable)
--- a/find-java-req.sh
+++ b/find-java-req.sh
@@ -8,6 +8,8 @@
 export PATH="/sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin"
 
 javaclassversion() {
+       [ $# -gt 0 ] || return
+
        local ver
        classver=$(file "$@" | grep -o 'compiled Java class data, version [0-9.]*' | awk '{print $NF}' | sort -u)
        [ "$classver" ] || return