Linux 删除登录信息

CentOS

cat /dev/null > /var/log/wtmp
cat /dev/null > /var/log/btmp
cat /dev/null > /var/log/lastlog
cat /dev/null > /var/log/secure
history -cw

Ubuntu

cat /dev/null > /var/log/wtmp
cat /dev/null > /var/log/btmp
cat /dev/null > /var/log/lastlog
cat /dev/null > /var/log/auth.log
history -cw