Remove matching items older than nn days with a minimum count threshold and simulation mode

cleanstuff.sh

#!/bin/bash

# Must be run by root
if [ "$EUID" -ne 0 ]; then
  echo "This script must be run as root"
  exit 1
fi

# Show script usage
usage() {
  echo "Usage: $0 -d DIRECTORY -m FILE_MASK -a AGE [-t THRESHOLD] [-x MAX_DEPTH] [-r]"
  echo "  -d DIRECTORY    Directory to search in"
  echo "  -m FILE_MASK    File mask to match (e.g., '*.log')"
  echo "  -a AGE          Minimum age of files and directories to delete (in days)"
  echo "  -t THRESHOLD    (Optional) Minimum number of matching items to proceed with deletion (default: 1)"
  echo "  -x MAX_DEPTH    (Optional) Maximum depth for the search"
  echo "  -r              (Optional) If present, perform the actual deletion. Otherwise, simulate only."
  exit 1
}

# Initialize the delete flag to false and threshold to 1
DELETE_FLAG=false
THRESHOLD=1

# Parse command line arguments
while getopts "d:m:a:t:x:r" opt; do
  case $opt in
    d) DIRECTORY=$OPTARG ;;
    m) FILE_MASK=$OPTARG ;;
    a) AGE=$OPTARG ;;
    t) THRESHOLD=$OPTARG ;;
    x) MAX_DEPTH=$OPTARG ;;
    r) DELETE_FLAG=true ;;
    *) usage ;;
  esac
done

# Check if all mandatory parameters are provided
if [ -z "$DIRECTORY" ] || [ -z "$FILE_MASK" ] || [ -z "$AGE" ]; then
  usage
fi

# Construct the find command
if [ -n "$MAX_DEPTH" ]; then
  FIND_CMD="find \"$DIRECTORY\" -maxdepth $MAX_DEPTH -name \"$FILE_MASK\" -mtime +$AGE"
else
  FIND_CMD="find \"$DIRECTORY\" -name \"$FILE_MASK\" -mtime +$AGE"
fi

# Execute the find command and store the result
MATCHING_ITEMS=$(eval $FIND_CMD)

# Count the number of matching items
MATCHING_COUNT=$(echo "$MATCHING_ITEMS" | grep -c '^')

# If the number of matching items is less than the threshold, do not delete
if [ "$MATCHING_COUNT" -lt "$THRESHOLD" ]; then
  echo "Fewer than $THRESHOLD matching items found. No deletions performed."
  exit 0
fi

# Print the matching items if any are found
if [ -n "$MATCHING_ITEMS" ]; then
  echo "Matching items:"
  echo "$MATCHING_ITEMS"
else
  echo "No matching items found."
  exit 0
fi

# Perform deletion if the delete flag is true
if [ "$DELETE_FLAG" = true ]; then
  echo "$MATCHING_ITEMS" | xargs rm -rf
  echo "Deleted $MATCHING_COUNT items."
else
  echo "Simulation only. No deletions performed."
fi

exit 0