Shell scripts periodically empty log files larger than 1G

This article mainly introduces the shell script to empty more than 1G log files, this article directly gives the implementation code, the need for friends can refer to the following

A question about how to automatically delete a specified file after it is larger than 1GB.

The batch code is as follows:

The code is as follows:

#!/bin/bash

# when the/var/log/syslog is greater than 1GB

# automatically back it up and empty

# Note the use of awk here

if! [-f/var/log/syslog]

Then

echo "File not exist!"

Exit 1

Fi

If [' Ls-l/var/log/syslog|awk ' {print $} '-gt $ ((1024*1024))]

Then

Cat/var/log/syslog >> ~/log/history # Log backup

echo >> ~/log/history # Add a blank line

Date >> ~/log/history # record time

echo "-------------------------------------" >> ~/log/history

echo >/var/log/syslog # Empty

Fi