rc.inet1: Use bash builtin arithmetic instead of external expr

1 files changed, 1 insertions, 1 deletions

diff --git a/rc.inet1 b/rc.inet1
index 9ab5102..871b38d 100644
--- a/rc.inet1
+++ b/rc.inet1
@@ -76,7 +76,7 @@ lo_down() {
 # Function to determine if virtual interfaces are defined
 virtif_determine() {
   if [ ! -z ${VIRTIFNAME} ]; then
-    virtifcount=$(expr $(echo ${VIRTIFNAME[@]} | wc -w) - 1)
+    virtifcount=$(($(echo ${VIRTIFNAME[@]} | wc -w) - 1))
   else
     return 1
   fi