Simplify detection of next usable user ID

Thanks to phrank!

diff --git a/useradd.macosx.sh b/useradd.macosx.sh
index 5382ec02d84baf49073751a179f392b936e0971e..252ff941b619913926e38b12a20028966b623692 100755 (executable)
--- a/useradd.macosx.sh
+++ b/useradd.macosx.sh
@@ -128,13 +128,8 @@ fi
 # No user ID given, generate it
 if [ $user_id -lt 0 ]; then
        # search next free user ID
-       declare -i new_id=501
-       id "$new_id" >/dev/null 2>&1
-       while [ $? -eq 0 ]; do
-               new_id=$new_id+1;
-               id "$new_id" >/dev/null 2>&1
-       done
-       user_id=$new_id
+       user_id=`echo $[$(dscl . -list /Users uid | awk '{print $2}' \
+               | sort -n | tail -n1)+1]`
 fi
 
 # Validate user name, user id and group id