delete_old_logs.sh

#!/bin/sh

# Auto cleanup expried log files.
# Author: Allex Wang (allex.wxn@gmail.com)
# GistID: c487d6d8b2b52219a87b
# GistURL: https://gist.github.com/c487d6d8b2b52219a87b

log_dir=$1      # log files directory
expired_days=7  # log file expried days

function delete_logs() {
    # get system unix datestamps
    local current_date=`date +%s`
    for f in `find $1 -name "*.log"`
    do
        local modify_date=$(stat -c %Y $f)
        # calculate the modified date diffs
        local exist_time=$(($(($current_date - $modify_date))/86400))
        if [ $exist_time -gt $expired_days ]; then
            echo "Delete log file: $f, EXIST_TIME: ${exist_time}"
            rm -f $f
        fi
    done
}

if [ -n "$log_dir" ]; then
    delete_logs $log_dir
else
    echo "logs dir not valid!"
fi