Ubuntu筆記

Bash History: Display Date And Time For Each Command 
http://www.cyberciti.biz/faq/unix-linux-bash-history-display-date-time/


Ubuntu 用指令設定和變更時區 
http://www.arthurtoday.com/2015/02/ubuntu-command-line-reconfig-time-zone.html#ixzz3z53SsREE


How To Monitor System Authentication Logs on Ubuntu 

https://www.digitalocean.com/community/tutorials/how-to-monitor-system-authentication-logs-on-ubuntu


20 Linux Server Hardening Security Tips 
http://www.cyberciti.biz/tips/linux-security.html

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