Update server without delay if nobody is connected

README.md

@@ -199,7 +199,7 @@ It is highly recommended you set the following environment values before startin
 | OLD_BACKUP_DAYS    | How many days to keep backups                                                                                                                                                                       | 30             | any positive integer                                                                                       |
 | AUTO_UPDATE_CRON_EXPRESSION  | Setting affects frequency of automatic updates. | 0 \* \* \* \* | Needs a Cron-Expression - See [Configuring Automatic Backups with Cron](#configuring-automatic-backups-with-cron) |
 | AUTO_UPDATE_ENABLED | Enables automatic updates | false | true/false |
-| AUTO_UPDATE_WARN_MINUTES | How long to wait to update the server, after the player were informed. | 30 | !0 |
+| AUTO_UPDATE_WARN_MINUTES | How long to wait to update the server, after the player were informed. (This will be ignored, if no Players are connected) | 30 | !0 |
 | AUTO_REBOOT_CRON_EXPRESSION  | Setting affects frequency of automatic updates. | 0 0 \* \* \* | Needs a Cron-Expression - See [Configuring Automatic Backups with Cron](#configuring-automatic-reboots-with-cron) |
 | AUTO_REBOOT_ENABLED | Enables automatic reboots | false | true/false |
 | AUTO_REBOOT_WARN_MINUTES | How long to wait to reboot the server, after the player were informed. | 5 | !0 |

scripts/auto_reboot.sh

@@ -1,10 +1,12 @@
 #!/bin/bash
+# shellcheck source=/dev/null
+source "/home/steam/server/helper_functions.sh"
 
 if [ "${RCON_ENABLED,,}" = true ]; then
     if [ "${AUTO_REBOOT_EVEN_IF_PLAYERS_ONLINE,,}" != true ]; then
-      players_count=$(rcon-cli -c /home/steam/server/rcon.yaml showplayers)
+      players_count=$(get_player_count)
 
-      if [ "$(echo -n "$players_count" | wc -l)" -gt 0 ]; then
+      if [ "$players_count" -gt 0 ]; then
           echo "There are ${players_count} players online. Skipping auto reboot."
           exit 1
       fi

scripts/helper_functions.sh

@@ -65,3 +65,16 @@ isExecutable() {
     fi
     return "$return_val"
 }
+
+# Checks how many players are currently connected
+# Outputs 0 if RCON is not enabled
+# Outputs the player count if rcon is enabled
+get_player_count() {
+    local player_list
+    if [ "${RCON_ENABLED,,}" != true ]; then
+        echo 0
+        return 0
+    fi
+    player_list=$(rcon-cli -c /home/steam/server/rcon.yaml "ShowPlayers")
+    echo -n "${player_list}" | wc -l
+}

scripts/update.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+# shellcheck source=/dev/null
+source "/home/steam/server/helper_functions.sh"
 
 if [ "${UPDATE_ON_BOOT}" = false ]; then
     echo "Update on Boot needs to be enabled for auto updating"
@@ -32,22 +34,25 @@ if [ -z "$TARGETBUILD" ]; then
 fi
 
 if [ "$CURRENTBUILD" != "$TARGETBUILD" ]; then
-    echo "New Build was found. Updating the server from $CURRENTBUILD to $TARGETBUILD."
-    if [ "${RCON_ENABLED,,}" = true ]; then
-        rm /palworld/steamapps/appmanifest_2394010.acf
-        if [ -n "${DISCORD_WEBHOOK_URL}" ]; then
-            /home/steam/server/discord.sh "Server will update in ${AUTO_UPDATE_WARN_MINUTES} minutes" "info" &
-        fi
-        rcon-cli -c /home/steam/server/rcon.yaml "broadcast The_Server_will_update_in_${AUTO_UPDATE_WARN_MINUTES}_Minutes"
-        sleep "${AUTO_UPDATE_WARN_MINUTES}m"
-        backup
-        rcon-cli -c /home/steam/server/rcon.yaml "shutdown 1"
-    else
+    if [ "${RCON_ENABLED,,}" != true ]; then
         echo "An update is available however auto updating without rcon is not supported"
         if [ -n "${DISCORD_WEBHOOK_URL}" ]; then
             /home/steam/server/discord.sh "An update is available however auto updating without rcon is not supported" "warn"
         fi
+        exit 0
+    fi
+    echo "New Build was found. Updating the server from $CURRENTBUILD to $TARGETBUILD."
+    rm /palworld/steamapps/appmanifest_2394010.acf
+
+    if [ "$(get_player_count)" -gt 0 ]; then
+        if [ -n "${DISCORD_WEBHOOK_URL}" ]; then
+        /home/steam/server/discord.sh "Server will update in ${AUTO_UPDATE_WARN_MINUTES} minutes" "info" &
+        fi
+        rcon-cli -c /home/steam/server/rcon.yaml "broadcast Server_will_update_in_${AUTO_UPDATE_WARN_MINUTES}_Minutes"
+        sleep "${AUTO_UPDATE_WARN_MINUTES}m"
     fi
+    backup
+    rcon-cli -c /home/steam/server/rcon.yaml "shutdown 1"
 else
     echo "The Server is up to date!"
 fi