Revert "Revert "Waiting for world save before update.""

This reverts commit d7004922dd1e813de136a9086cccc4b0c9139d66.

README.md

@@ -99,6 +99,9 @@ manually updates ARK server if a new version is available
 #### arkmanager forceupdate
 Apply update without check the current version
 
+#### arkmanager safeupdate
+Waits for server to perform world save and then updates.
+
 #### arkmanager status
 Get the status of the server. Show if the process is running, if the server is up and the current version number
 

tools/arkmanager

@@ -258,6 +258,26 @@ forceUpdate(){
   fi
 }
 
+#
+# Waits for server to perform save before update (until save file is newer than 1 minute)
+#
+safeUpdate(){
+  cd "$arkserverroot"
+  
+  if isUpdateNeeded; then
+    while [ ! `find $arkserverroot/ShooterGame/Saved/SavedArks -mmin -1 -name $serverMap.ark` ]; do
+	  echo "$timestamp: Save file older than 1 minute. Delaying update." >> "$logdir/update.log"
+	  sleep 30s
+    done
+    echo "$timestamp: Save file newer than 1 minute. Performing an update." >> "$logdir/update.log"
+    forceUpdate
+  else
+    echo "Your server is already up to date! The most recent version is ${bnumber}."
+    echo "$timestamp: No update needed." >> "$logdir/update.log"
+  fi
+}
+
+
 #
 # Print the status of the server (running? online? version?)
 #
@@ -325,6 +345,7 @@ case "$1" in
       echo "update        Check for a new ARK server version, if needed, stops the server, updates it, and starts it again"
       echo "forceupdate   Apply update without check the current version"
       echo "checkupdate   Check for a new ARK server version"
+      echo "safeupdate    Wait for server to perform world save and update.
       echo "boradcast     PLACEHOLDER, not supported yet"
       echo "status        Returns the status of the current ARK server instance"
     ;;