What are log rotation scripts and how do I use them?

What are log rotation scripts and how do I use them?

Log rotation scripts are automated tools that manage log files by archiving, compressing, or deleting them to prevent excessive disk usage.

Why is log rotation important?

Log rotation is important because it helps maintain system performance, prevents disk space issues, and ensures that logs are manageable and accessible.

Can you show me an example of a log rotation script?

Sure! Here's a simple example in Bash:

#!/bin/bash

LOG_DIR=/var/log/myapp
MAX_LOG_SIZE=100M

for log in $LOG_DIR/*.log; do
  if [ -f "$log" ]; then
    if [ $(du -k "$log" | cut -f1) -gt $MAX_LOG_SIZE ]; then
      mv "$log" "$log.old"
      touch "$log"
    fi
  fi
done

This script checks log files and rotates them if they exceed 100MB.

How can I schedule this script to run automatically?

You can schedule the script using cron jobs. For example, to run it daily at midnight, add the following line to your crontab:

0 0 * * * /path/to/your/script.sh