#!/bin/bash
data=($(find /var/log/ -name '*.log'))
for log in "${data[@]}"; do
    echo "$log clear"
    echo >$log
done
data=($(find /var/log/ -name '*.err'))
for log in "${data[@]}"; do
    echo "$log clear"
    echo >$log
done
data=($(find /var/log/ -name 'mail.*'))
for log in "${data[@]}"; do
    echo "$log clear"
    echo >$log
done
echo >/var/log/syslog
echo >/var/log/btmp
echo >/var/log/messages
echo >/var/log/debug
 