improve readability

hooks/install

@@ -5,7 +5,7 @@
 set -x
 status-set maintenance "Setting the default gateway"
 
-GATEWAY="$(config-get gateway)"
+GATEWAY="$( config-get gateway )"
 
 if [ -z "$GATEWAY" ]; then
     juju-log "Gateway option is empty. Exiting..."
@@ -13,22 +13,31 @@ if [ -z "$GATEWAY" ]; then
     exit 0
 fi
 
-GATEWAY_IP=`echo "$GATEWAY" | awk -F "/" '{print $1}'`
+GATEWAY_IP="$( echo "$GATEWAY" | awk -F "/" '{print $1}' )"
 
 source /etc/lsb-release
 
-RELEASE_MAJOR="$(echo $DISTRIB_RELEASE | awk -F '.' '{print $1}')"
+RELEASE_MAJOR="$( echo $DISTRIB_RELEASE | awk -F '.' '{print $1}' )"
 
 if [ "$RELEASE_MAJOR" -le "16" ]; then
+    # Ubuntu release is less or equal than trusty
     # copy metric 0 routes to routes with metric 1
-    ip route show | grep "^default" | grep -v metric | while read line; do ip route append $line metric 1 || true; done
+    ip route show | grep "^default" | grep -v metric | while read line; do
+        ip route append $line metric 1 || true
+    done
     # delete metric 0 routes
-    ip route show | grep "^default" | grep -v metric | while read line; do ip route del $line metric 0; done
-else # release is not less or equal than trusty
+    ip route show | grep "^default" | grep -v metric | while read line; do
+        ip route del $line metric 0
+    done
+else
     # copy metric 0 routes to routes with metric 1
-    ip route show default metric 0 | while read line; do ip route append $line metric 1 || true; done
+    ip route show default metric 0 | while read line; do
+        ip route append $line metric 1 || true
+    done
     # delete metric 0 routes
-    ip route show default metric 0 | while read line; do ip route del $line metric 0; done
+    ip route show default metric 0 | while read line; do
+        ip route del $line metric 0
+    done
 fi
 
 # add our route