logrotate.sh

#!/bin/bash
#author: salman sk
# Configuration
LOG_DIR="/var/log"                # Directory containing log files
RETENTION_DAYS=30                 # Number of days to keep logs before deleting
ROTATE_COUNT=7                    # Number of rotated log files to keep

if [ ! -d "$LOG_DIR" ]; then
  echo "Log directory $LOG_DIR does not exist."
  exit 1
fi

# Rotate logs: compress old logs
echo "Rotating and compressing old logs..."
find "$LOG_DIR" -type f -name "*.log" -mtime +1 -exec gzip -9 {} \;

echo "Cleaning up logs older than $RETENTION_DAYS days..."
find "$LOG_DIR" -type f -name "*.gz" -mtime +$RETENTION_DAYS -exec rm -f {} \;

# Delete excess rotated logs if count exceeds ROTATE_COUNT
echo "Deleting excess rotated logs if they exceed $ROTATE_COUNT..."
for log in $(find "$LOG_DIR" -type f -name "*.log" -exec basename {} .log \; | sort | uniq); do
  count=$(ls -1 "$LOG_DIR/${log}.*.gz" 2>/dev/null | wc -l)
  if [ "$count" -gt "$ROTATE_COUNT" ]; then
    excess=$((count - ROTATE_COUNT))
    echo "Removing $excess excess rotated logs for $log..."
    ls -1t "$LOG_DIR/${log}.*.gz" | tail -n $excess | xargs rm -f
  fi
done

echo "Log management complete."

exit 0