From: martin f. krafft <madduck@madduck.net>
Date: Wed, 26 Feb 2014 13:01:28 +0000 (+0100)
Subject: Allow gateway to be specified, or calculate it with ipcalc
X-Git-Url: https://git.madduck.net/code/vinst.git/commitdiff_plain/7b0c46474dc0716767b89901a33a85efbb2dc8cd

Allow gateway to be specified, or calculate it with ipcalc
---

diff --git a/vinst b/vinst
index 9a8eb90..66b70aa 100755
--- a/vinst
+++ b/vinst
@@ -35,6 +35,14 @@ while [ -n "$1" ]; do
       esac
       IPADDRESS="$1"
       ;;
+    (-g|--gateway)
+      shift
+      if [ -z "$1" ]; then
+        echo >&2 'E: --gateway/-g needs IP address'
+        exit 1
+      fi
+      GATEWAY="$1"
+      ;;
     (-r|--ram)
       shift
       if [ -z "$1" ]; then
@@ -70,7 +78,7 @@ hostname=${HOSTNAME%%.*} \
 domain=${HOSTNAME#*.}"
 
 if [ -n "$IPADDRESS" ]; then
-  if [ -z "$GATEWAY" ]; then
+  if [ -z "$GATEWAY" ] && [ -x $(command -v ipcalc) ]; then
     # default to the first IP in the network
     GATEWAY=$(ipcalc $IPADDRESS | grep HostMin | awk '{print $2}')
   fi