fix

check-disk-space.sh

@@ -12,8 +12,13 @@ while IFS= read -r line; do
     filesystem=$(echo "$line" | awk '{print $1}')
     usage=$(echo "$line" | awk -F'%' '{print $1}')
 
+    # Check if usage is a number
+    if [[ $usage =~ ^[0-9]+$ ]]; then
         # Check if usage is above the threshold
         if [ "$usage" -ge "$threshold" ]; then
             echo "WARNING: Filesystem $filesystem is $usage% full!"
         fi
+    else
+        echo "WARNING: Unable to parse usage for filesystem $filesystem."
+    fi
 done <<< "$filesystems"