umountrepo: detect fusermount helper version available on the system

Author: tildeslu

umountrepo

@@ -62,22 +62,28 @@ if [ "`id -u`" == 0 ]; then
     ISROOT=true
 else
     ISROOT=false
+    # detect fusermount helper available on the system
+    FUSERMOUNT=$(command -pv fusermount)
+    if [ -z "$FUSERMOUNT" ]; then
+        FUSERMOUNT=$(command -pv fusermount3)
+    fi
 fi
 
+
 for REPO; do
     if $LAZY; then
         echo "Lazily unmounting $REPO"
         if $ISROOT; then
             umount -l $REPO
         else
-            fusermount -uz $REPO
+            $FUSERMOUNT -uz $REPO
         fi
     else
         echo "Unmounting $REPO"
         if $ISROOT; then
             umount $REPO
         else
-            fusermount -u $REPO
+            $FUSERMOUNT -u $REPO
         fi
         rmdir $REPO
     fi