rm -f /etc/udev/rules.d/70*
    rm -f /etc/ssh/*key*
    cat /dev/null > /var/log/audit/audit.log 
    cat /dev/null > /var/log/wtmp 
    cat /dev/null > /var/log/lastlog 
    cat /dev/null > /var/log/grubby
    logrotate -f /etc/logrotate.conf 
    rm -f /var/log/*-* /var/log/*.gz
    unset HISTFILE
    rm -f ~/.bash_history 
    history -c
    shutdown -h now
 

為虛擬化平臺制作centos 7模板