For removing information from #lastlog command $cp /var/log/lastlog /opt $ > /var/log/lastlog
For removing information from #last command $cp /var/log/wtmp /opt $ > /var/log/wtmp For removing information from #lastb command $cp /var/log/btmp /opt $ > /var/log/btmp Common Linux log files name and usage * /var/log/message: General message and system related stuff * /var/log/auth.log: Authenication logs * /var/log/kern.log: Kernel logs * /var/log/cron.log: Crond logs (cron job) * /var/log/maillog: Mail server logs * /var/log/qmail/ : Qmail log directory (more files inside this directory) * /var/log/httpd/: Apache access and error logs directory * /var/log/lighttpd: Lighttpd access and error logs directory * /var/log/boot.log : System boot log * /var/log/mysqld.log: MySQL database server log file * /var/log/secure: Authentication log * /var/log/utmp or /var/log/wtmp : Login records file * /var/log/yum.log: Yum log files
