putty ppk convert to OpenSSH key on MAC

First, open the puttygen.exe in windows.

you can download here => PuTTYgen

find the conversion toolbar item and select submenu export the ppk to the OpenSSH

ex.   foo_rsa

Mac OSX 32 64 bit kernel boot command

last week, I launch a article about 64 bit kernel booting.

But I found a command today to set up kernel easily form the Apple official site.

#sudo systemsetup -setkernelbootarchitecture x86_64 


#sudo systemsetup -setkernelbootarchitecture i386

MAC OSX boot 64 bit kernel mode default

1. power on your MAC and push keys 4 & 6 on your keyboard until inter your desktop.

2. open the terminal 

     # uname -a

    if it displays ........X86_64 , and you are in the 64 bit kernel.

Linux OSX Windows Web Programming Editors

My project need to develop web UI nearly.

In this project that can use HTML, CSS, JavaScript & library like prototype YUI Ext-JS and  

Dynamic webpage Script(JSP,PHP etc)

First, I need a tool that can code convenient and speed up.

So, I try to find some Editors and IDEs on web site.

MAC R/W NTFS by using terminal

step 1 Check you do not install any NTFS R/W application tool.

#sudo find / -name 'ntfs'  

step 2 copy your /sbin file

#sudo cp /sbin/mount_ntfs /sbin/mount_ntfs.orig 

4 steps upgrade firmware for your Amazon Kindle 3rd

1.Go to this link http://www.amazon.com/gp/help/customer/display.html/ref=hp_navbox_top_kindlelgi?nodeId=200529700
& download Kindle 3G (Free 3G + Wi-Fi) - U.S. and Canadian Customers*:  Download 3.1 (Early Preview Release)
Your serial number will start with "B006" (My Kindle bought for US Amazon & chose this version)

if your Kindle is wifi, please select this 

Kindle Wi-Fi: Download 3.1 (Early Preview Release) 

Your serial number will start with "B008"

Linux Notebook purchasing guide(Linux筆電採購指南)

目前幾乎主要的硬體都支援Linux了,但是我們在為Linux採購筆電時還是充滿著許多疑問,怕不相容,買的規格不是自己要的之類等等.就提夠一些採購的方法給大家做為購買時的參考吧.

用途
可以先想一想你打算拿這台筆電來作哪些事,再看自己的用途去選擇規格.
提供一下購買的思考流程給大家做參考吧

1. 預算有多少呢？
2. 打算買幾吋的(11" 13 " 15" 17" 越大當容越重越難攜帶啦)
3. 使用用途是上網文書,系統管理,軟體開發,玩遊戲可能用到windows等...?
4. 需要多少小時的電池使用時間呢？
5. 光碟機是否需要,或者需要藍光或燒錄DVD？
6. 要玩遊戲的話,可能需要雙系統或者開虛擬機器RAM,CPU跟顯示可必須都有不錯的規格.權衡之後可以想一下用桌電是否CP值更高?

這些網站可以看到有哪些牌子的筆電跟相容哪些版本
http://www.linux-laptop.net/
http://www.linuxcertified.com/
當然是大家已經測試過的,自己也可以動手裝裝看發表在上面