created log file clean up script

scripts/clean_up_logs.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+# This script is used to clean up log files in a specified folder.
+# It checks if the log folder exists, counts the number of log files with a specific naming pattern,
+# and deletes log files that are older than 1 day if doing so will leave at least two log files.
+
+log_folder=$1
+
+# Check if the log folder exists
+if [ ! -d "$log_folder" ]; then
+    echo "Log folder does not exist."
+    exit 1
+
+# Count files with naming pattern "lsst-backup-logs-*.csv"
+else
+    num_files=$(ls -1 $log_folder/lsst-backup-logs-*.csv 2>/dev/null | wc -l)
+    if [ $num_files -gt 2 ]; then
+        num_old=`find $log_folder -name "lsst-backup-logs-*.csv" -type f -mtime +1 | wc -l`
+        num_left=`expr $num_files - $num_old`
+        if [[ $num_left -gt 2 ]];
+        then
+            echo "Cleaning up $num_files log files..."
+            find $log_folder -name "lsst-backup-logs-*.csv" -type f -mtime +1 -exec rm -v {} \;
+        fi
+        echo "Log files cleaned up."
+    else
+        echo "No log files to clean up."
+    fi
+fi