Add Scripts/mc-backup.sh

Scripts/mc-backup.sh

@@ -0,0 +1,87 @@
+#!/bin/usr/env bash
+
+set -eou pipefail
+#set -x
+
+# The script creates backups of all save files in ~/.minecraft.
+# Backups older than 1 day will be deleted except for the most recent one.
+# Log files in ~/.minecraft that are older than 1 hour and larger than 1 GB will be deleted.
+
+# Script assumes you have one save which is called "New World" (See line 41).
+
+##################################################
+
+## Write Log File
+
+# Set directory for the log file
+mkdir -p "/home/$user/.minecraft/logs"
+log="/home/$user/.minecraft/logs/$(date +%Y-%m-%d_%H:%M).log"
+
+# Redirect standard streams to the log file
+exec >> >(tee -i "${log}")
+exec 2>&1
+
+##################################################
+
+## Create Backup
+
+# Change to directory
+cd "/home/$user/.minecraft"
+
+# Check if Minecraft is running (not the launcher)
+if pgrep -f "minecraft.*java" > /dev/null; then
+
+   # Determine variable for current date
+   today=$(date +%Y-%m-%d_%H:%M)
+
+   # Create directory with date
+   mkdir -p "./backup/${today}"
+
+   # Copy save file to new directory
+   cp -r "./saves/New World/" "./backup/${today}"
+
+   echo "Backup ${today} created."
+fi
+
+##################################################
+
+## Delete Old Backups
+
+cd "/home/$user/.minecraft/backup"
+
+# Loop through all directories
+for dir in *; do
+
+   # Check if variable is a directory
+   if [[ -d ${dir} ]]; then
+
+      # Extract the date from the directory name
+      dir_day=$(echo ${dir} | cut -d '_' -f1)
+
+      # Determine the most recent directory
+      dir_recent=$(ls -d ${dir_day}* | sort | tail -n 1)
+
+      # Delete all directories except for the most recent one
+      if [[ ${dir} != ${dir_recent} ]]; then
+
+         # Check if directory is older than 1 day
+         find ${dir} -maxdepth 0 -type d -mtime +1 -exec echo "Backup {} deleted." \; -exec rm -rf {} +
+      fi
+   fi
+done
+
+##################################################
+
+## Delete Old Logs
+
+# Check if Minecraft and the launcher are not running
+if ! pgrep -f "minecraft" > /dev/null; then
+
+   # Delete official logs that are larger than 1 GB and older than 1 hour
+   find "/home/$user/.minecraft/" -name 'launcher_log*' -size +1G -mmin +60 -exec rm {} +
+
+   # Delete logs from this script that are empty or older than 30 days
+   find "/home/$user/.minecraft/logs" -type f -mtime +30 -exec rm {} +
+   find "/home/$user/.minecraft/logs" -type f -empty -delete
+
+fi