add a --noclobber flag

git-svn-id: svn://busybox.net/trunk/busybox@15320 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 8 insertions, 2 deletions

diff --git a/applets/install.sh b/applets/install.sh
index 1cd97bba3..4ec96c254 100755
--- a/applets/install.sh
+++ b/applets/install.sh
@@ -10,10 +10,12 @@ if [ -z "$prefix" ]; then
 fi
 h=`sort busybox.links | uniq`
 cleanup="0"
+noclobber="0"
 case "$2" in
         --hardlinks) linkopts="-f";;
         --symlinks)  linkopts="-fs";;
         --cleanup)   cleanup="1";;
+        --noclobber) noclobber="1";;
         "")          h="";;
         *)           echo "Unknown install option: $2"; exit 1;;
 esac
@@ -81,8 +83,12 @@ for i in $h ; do
                 ;;
                 esac
         fi
-        echo "  $prefix$i -> $bb_path"
-        ln $linkopts $bb_path $prefix$i || exit 1
+        if [ "$noclobber" = "0" ] || [ ! -e "$prefix$i" ]; then
+                echo "  $prefix$i -> $bb_path"
+                ln $linkopts $bb_path $prefix$i || exit 1
+        else
+                echo "  $prefix$i already exists"
+        fi
 done
 
 exit 0