Zeroplex 生活隨筆

覺得輸入完帳號、密碼到 prompt 出現速度實在有點太慢，檢查了 .bashrc　發現在 bash_completion 之前，還有 script 拖到時間。

每次登入都會看到這個畫面，：

Welcome to Ubuntu 12.04.3 LTS (GNU/Linux 3.9.3-x86 i686)

 * Documentation:  https://help.ubuntu.com/

  System information as of Wed Oct 23 09:35:28 CST 2013

  System load:  0.66               Processes:           163
  Usage of /:   65.8% of 46.01GB   Users logged in:     0
  Memory usage: 39%                IP address for eth0: 127.0.0.1
  Swap usage:   10%

  Graph this data and manage this system at https://landscape.canonical.com/

Last login: Wed Oct 23 09:30:26 2013 from some.where.net

除了 uptime 以外，還會有需要更新的套件數量統計，不禁懷疑是否就是統計套件更新數量在慢。

先搜尋訊息存在哪裡：

$ grep -s -r "System information" /etc
motd:  System information as of Wed Oct 23 09:35:28 CST 2013
update-motd.d/50-landscape-sysinfo:    echo -n "  System information as of "
update-motd.d/50-landscape-sysinfo:    echo " System information disabled due to load higher than $threshold"

看來是跟 motd 有關。man 一下， motd　的意思是「message of a day」，而 /etc/update-motd.d 下則是用來統計系統資訊的 script。

而 update-motd.d 的 script 是否在 login 時執行還不曉得，找個時間在繼續追。

Download deb package from official website:
http://free.avg.com/us-en/download.prd-alf

install it:

$ sudo dpkg avg2013flx-r3115-a6155.i386.deb

update before scanning:

$ sudo avgupdate

setup real-time protection (support only special version of Linux kernel):

$ sudo avgsetup

Scan whole system:

$ sudo avgscan /