iroot tester

diff --git a/iroot.sh b/iroot.sh
index 6651a58..0d8e531 100755 (executable)
--- a/iroot.sh
+++ b/iroot.sh
@@ -2,7 +2,7 @@
 
 # utility to manage installer variables
 
-IROOT="/root/instantARCH/config"
+IROOT="${IROOT:-/root/instantARCH/config}"
 
 if [ -z "$1" ]; then
     echo "usage: