hsu0301 is not in the sudoers file. This incident will be reported.

1. su

2. visudo

3.下面是添加完的结果。
## Allow root to run any commands anywhere
root    ALL=(ALL)       ALL
hsu0301 ALL=(ALL)       ALL              <----新加入的

ubuntu 14.04 装 tftp server

1.安裝套件

sudo apt-get install xinetd tftpd tftp

2.sudo vi /etc/xinetd.d/tftp 

service tftp
{
    protocol        = udp
    port            = 69
    socket_type     = dgram
    wait            = yes
    user            = nobody
    server          = /usr/sbin/in.tftpd
    server_args     = ~/tftp
    disable         = no
}

3.建立資料夾

sudo mkdir ~/tftp
sudo chmod -R 777 ~/tftp
sudo chown -R nobody ~/tftp

4.sudo service xinetd restart

5.測試tufts get file都會Error Code 2: Access violation

將/etc/xinetd.d/tftp 改成如下即可 ＝＝

service tftp
{
    protocol        = udp
    port            = 69
    socket_type     = dgram
    wait            = yes
    user            = nobody
    server          = /usr/sbin/in.tftpd
    server_args     = /home/jim.hsu/tftp
    disable         = no
}

LuCI (Lua Configiration Interface)

• LuCI (Lua Configiration Interface) 是 OpenWRT 的 Web 管理介面。

• LuCI 是一個 MVC framework，所以我們可以在 LuCI 的基礎上寫 Web 的應用程式。

• OpenWRT management flow:   

• official reference:

1. http://luci.subsignal.org/trac/wiki/Documentation/ModulesHowTo
2. https://wiki.openwrt.org/doc/techref/luci
3. https://github.com/openwrt/luci/wiki

[Tool] 將 PDF 轉換為 PowerPoint

付費的官方解法 - Adobe Acrobat DC

網路上有不少免費的web版轉換工具，但很多轉出來都跑版或是一片空白

smallpdf目前測試正常

Google Cloud Platform V.S AWS

價格試算:

Amazon Web Service:

Google Cloud Platform:


IO PK:

By the numbers: How Google Compute Engine stacks up to Amazon EC2


價格PK:

Google vs. AWS Pricing: Google Cuts Are First of 2015


網路速度PK

Need for speed: Testing the networking performance of the top 4 cloud providers

Amazon EC2 vs Azure vs Rackspace Cloud vs Google C. Engine | Some tests and stats


總結:

• Google Cloud在大優點是在台灣有機房，相比AWS東京，ping大勝
• Google在價格上有優勢
• AWS在產品完整度上Google目前還不能比

以新創、低需求、低成本來考慮的話，Google或許是個好選擇?

joomla 移除url中的index.php

1.系統->全站設定->網站設定->使用網址重寫（URL rewrite）選擇Yes

2.將joomla站點根目錄下的htaccess .txt文件重命名為.htaccess

[轉貼]2015 5月 android 版本市佔率

統計期間: 2015/5/26~2015/06/01

Version	Codename	API	Distribution
2.2	Froyo	8	0.3%
2.3.3 - 2.3.7	Gingerbread	10	5.6%
4.0.3 - 4.0.4	Ice Cream Sandwich	15	5.1%
4.1.x	Jelly Bean	16	14.7%
4.2.x		17	17.5%
4.3		18	5.2%
4.4	KitKat	19	39.2%
5.0	Lollipop	21	11.6%
5.1		22	0.8%

資料來源:

http://developer.android.com/intl/zh-tw/about/dashboards/index.html