make interval more easily customisably

keep_trying.sh

@@ -1,14 +1,15 @@
 #!/bin/sh
 # simple script to fix my broken wifi 
-# it checks if wifi is connected every 5 seconds, and if not, repeatedly attempts to connect
+# it checks if wifi is connected at regular intervals, and if not, repeatedly attempts to connect
 
 network="<network_name>"
 interface="<interface_name>"
+interval=5
 
 while [ true ]; do 
-    # if wifi is connected, do nothing for 5 seconds
+    # if wifi is connected, do nothing for $interval seconds
     if [ -n "$(nmcli connection show | grep '.*'"$network"'.*'"$interface"'.*')" ]; then
-        sleep 5
+        sleep $interval
     # else, wifi is not connected so attempt to connect to wifi network, and keep trying until it succeeds
     else 
         nmcli con up "$network" || while [ "$?" != "0" ]; do nmcli con up "$network"; done