Ernest Talks

Install Memcached and PHP Memcached Extension under Mac OS 10.8

I just setup memcached on a new/clean Mac OS environment without WAMP.<br />
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<span style="font-size: large;"><b>iTerm2</b></span><br />
My favorite terminal.<br />
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<b><span style="font-size: large;">Apach<span style="font-size: large;">e</span></span></b><br />
First of all, I use original apache service comes with this Mac. <br />
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<b><span style="font-size: large;">PHP</span></b><br />
Edit the file: "sudo vim /etc/apache2/httpd.conf" and remove "#" of the line “#LoadModule php5_module libexec/apache2/libphp5.so”. Then restart apache by:<br />
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<pre class="brush: plain">> sudo apachectl restart</pre>
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<b><span style="font-size: large;">MySQL </span></b><br />
Download MySQL from <a href="http://www.mysql.com/downloads/mysql/">mysql.com</a>. I download version "Mac OS X ver. 10.6 (x86, 64-bit), DMG Archive" (mysql-5.5.28-osx10.6-x86_64.dmg). After unpack .dmg file, there're one readme document and three pkg for install.<br />
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<b><span style="font-size: large;">Homebrew</span></b><br />
I install Homebrew for easier ports management. <a href="http://mxcl.github.com/homebrew/">http://mxcl.github.com/homebrew/</a><br />
After install Homebrew, install 3 packages step-by-step:<br />
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<pre class="brush: plain">> brew install libevent

> brew install memcached</pre>
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You can check if memcached was installed correctly by:<br />
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<pre class="brush: plain">> memcache -h </pre>
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Then go to install the 3rd package named libmemcached by:<br />
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<pre class="brush: plain">> brew install libmemcached</pre>
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<span style="font-size: large;"><b>XCode: Command L<span style="font-size: large;">ine Tools</span></b></span><br />
Get in App Store, to search and install "XCode" for free. Go to Xcode Preferences, and find Download tab. Make sure you install "Command Line tools" at least.<br />
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<span style="font-size: large;"><b>PHP Externsion</b></span><br />
Once you get the command line tools in XCode, you are able to run: (you may need to change the version numbers.)<br />
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<pre class="brush: plain">> sudo pecl install memcached-2.1.0</pre>
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After successfully installation, you should add "extension=memcached.so" to php.ini. Restart apache again.<br />
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<pre class="brush: plain">> sudo apachectl restart </pre>
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Now, all set! Enjoy memcached on your Mac. :)<br />
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Install Memcached and PHP Memcached Extension under Mac OS 10.8

I just setup memcached on a new/clean Mac OS environment without WAMP. iTerm2 My favorite terminal. Apach e First of all, I use origin...

在 Ubuntu 11.10 新增自己需要的螢幕解析度

手邊一台舊電腦重灌 Ubuntu 11.10 後抓不到一台 23" 螢幕，無法自動偵測，解析度也變成只有兩個可以選：1024x768 和 800x600。後來找到手動的<a href="http://www.ubuntu-tw.org/modules/newbb/viewtopic.php?topic_id=26464&forum=22&post_id=130004#forumpost130004">解法</a>。<div>
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例如我這次想要加入的是 1680x1050 (16:10) 解析度 @ 更新頻率 60：</div>
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<pre class="brush: plain">$ gtf 1680 1050 60 -x

# 1680x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 147.14 MHz
  Modeline "1680x1050_60.00"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +Vsync

</pre>
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編輯 /etc/X11/xorg.conf （原本不存在這個檔案）</div>
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<pre class="brush: plain">$ sudo vim /etc/X11/xorg.conf
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "Device"
Identifier "Configured Video Device"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
Vendorname "Generic LCD Display"
Modelname "LCD Panel 1024x900"
Horizsync 31.0-83.0
Vertrefresh 56.0 - 76.0
modeline "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
modeline "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
# 將剛才跑 gtf 產生的 Modeline 貼過來下面
Modeline "1680x1050_60.00"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +Vsync

Gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
Defaultdepth 24
SubSection "Display"
Depth 24
# 輸入自己想要的解析度，此例為 1680x1050
Virtual 1680 1050
Modes "1680x1050@60" "1024x768@60" "800x600@60" "800x600@56" "640x480@60"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
screen 0 "Default Screen" 0 0
EndSection
Section "Module"
Load "dri"
Load "v4l"
EndSection
Section "ServerFlags"
EndSection

</pre>
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重新開機後即可服用（切換過去） :)</div>
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在 Ubuntu 11.10 新增自己需要的螢幕解析度

手邊一台舊電腦重灌 Ubuntu 11.10 後抓不到一台 23" 螢幕，無法自動偵測，解析度也變成只有兩個可以選：1024x768 和 800x600。後來找到手動的解法。例如我這次想要加入的是 1680x1050 (16:10) 解析度 @ 更新頻率 6...

AWS EC2 再度降價囉！

Just checked the new AWS EC2 pricing that <a href="http://aws.typepad.com/aws/2012/03/dropping-prices-again-ec2-rds-emr-and-elasticache.html">announced</a> 2 days ago. The pricing is very competitive in hosting/VPS industry, especially the pricing of 3-year reserved instance.<br />
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I made a simple calculating table for your reference. More pricing numbers please refer to <a href="http://aws.amazon.com/ec2/pricing/">AWS EC2 service page</a>.<br />
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ps: the numbers of "per hour" are accurated to 2 decimal places, but they are 3 originally.<br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBa0vJEKw_wo-UL4cLagq4DxZ4Ixh9sOHAwSaLCwLcJo9_J_BFUibTs8A-CQboQwin9j3CJFuWhavsP1W-D4UAA8UAYCQGhFezRapLCd2biGuSsGcMpQZqMrGPORQbVM7zk38213ibI3A/s1600/%E8%9E%A2%E5%B9%95%E5%BF%AB%E7%85%A7+2012-04-17+%E4%B8%8A%E5%8D%8811.58.52.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="204" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhBa0vJEKw_wo-UL4cLagq4DxZ4Ixh9sOHAwSaLCwLcJo9_J_BFUibTs8A-CQboQwin9j3CJFuWhavsP1W-D4UAA8UAYCQGhFezRapLCd2biGuSsGcMpQZqMrGPORQbVM7zk38213ibI3A/s640/%E8%9E%A2%E5%B9%95%E5%BF%AB%E7%85%A7+2012-04-17+%E4%B8%8A%E5%8D%8811.58.52.png" width="640" /></a></div>
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AWS EC2 再度降價囉！

Just checked the new AWS EC2 pricing that announced 2 days ago. The pricing is very competitive in hosting/VPS industry, especially the pri...

在 MacOS 裡頭載入 .bashrc 的方法

剛練習使用一台 MBP (MacOS 環境)，在 terminal 下常常遇到系統不理會很順手的 "ll" 指令縮寫，看了一下 ~/.bashrc 裡頭有寫好這個 alias 沒有問題。原來問題出在 MacOS 是去讀 ~/.profile，所以就弄個連結連過...

Setup Gitolite Hook post-receive-email

設定 Gitolite 範圍中每個 repository 在每次收到 git push 之後就通知該 repository 相關人員，需要設定 hook 機制。但是 gitolite 和 git 的設定方式有些不同，尋覓許多文件後終於找到實作的方式成功 :)<br />
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<span style="font-size: large;">環境</span></div>
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<ul>
<li>建立 gitolite 環境：參考 Tsung 的「<a href="http://blog.longwin.com.tw/2011/03/linux-gitolite-git-server-2011/">Linux 使用 Gitolite 架設 Git Server</a>」 採用 gitolite  這個帳號直接管理 gitolite，沒有另外建立一個 git 的 linux user 帳號。</li>
<li>gitolite 的 hooks 位在：/usr/share/gitolite/hooks/common</li>
<li>寄信通知大家的工具程式「post-receive-email」位在：/usr/share/doc/git/contrib/hooks/post-receive-email</li>
</ul>
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<span style="font-size: large;">方向</span></div>
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<ul>
<li>讓 gitolite 的 hook script 裡頭知道要去哪裡找到可以執行送信程式「post-receive-email」</li>
</ul>
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<pre class="brush: plain">$ sudo chmod a+x /usr/share/doc/git/contrib/hooks/post-receive-email
$ sudo vim /usr/share/gitolite/hooks/common/post-receive
$ sudo chmod a+x /usr/share/gitolite/hooks/common/post-receive
</pre>
在 /usr/share/gitolite/hooks/common/post-receive 中，原本是空的，可以輸入以下 script：
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<pre class="brush: plain">#!/bin/bash
/usr/share/doc/git/contrib/hooks/post-receive-email
</pre>
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<ul>
<li>調整 .gitolite.rc 檔案內容（不然等一下設定 git config 參數在 gitolite.conf 的時候，gitolite 會不認識 config 參數）</li>
</ul>
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<pre class="brush: plain">$ sudo su gitolite
$ vim .gitolite.rc
  # 然後找到「$GL_GITCONFIG_KEYS = "";」
  # 改成「$GL_GITCONFIG_KEYS = ".*";」
$ gl-setup admin.pub
</pre>
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<ul>
<li>將 git config 參數設定在 gitolite-admin/conf/gitolite.conf 裡頭，然後 git push </li>
</ul>
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<pre class="brush: plain">repo    testing # 在此以 testing 這個 repo 為範例
        RW+     = @all # 你原本的權限設定

config hooks.mailinglist    = "ernest@example.com, chiang@example.com" # 可以寄信給多個人
        config hooks.envelopesender = git@example.com # 寄件者的信箱地址 email address of sender
        config hooks.emailprefix    = "[testing] " # 信件主旨的開頭字串
        config hooks.showrev        = "git show -C %s; echo" # 原本只有列出有改動的檔案們，在此我改為列出有改動的檔案內容
</pre>
然後 git add, git commit, git push 到 git server 去。
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<ul>
<li>git push 後，在 git server 端，用 gitolite 這個 user 跑 gl-setup （讓 gitolite 幫我們將 config 和 hooks 灑進去各個 repository 中）</li>
</ul>
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<pre class="brush: plain">$ sudo su gitolite
$ gl-setup admin.pub
</pre>
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到目前為止應該 hook 可以正常動作了 :)<br />
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<span style="font-size: large;">參考參數：</span><br />
(<a href="http://sourceforge.net/apps/trac/sourceforge/wiki/Git%20hook%20script%20example">reference</a>)<br />
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<pre class="wiki" style="background-attachment: initial; background-clip: initial; background-color: white; background-image: initial; background-origin: initial; border-bottom-color: rgb(215, 215, 215); border-bottom-style: solid; border-bottom-width: 1px; border-image: initial; border-left-color: rgb(215, 215, 215); border-left-style: solid; border-left-width: 1px; border-right-color: rgb(215, 215, 215); border-right-style: solid; border-right-width: 1px; border-top-color: rgb(215, 215, 215); border-top-style: solid; border-top-width: 1px; font-size: 13px; margin-bottom: 1em; margin-left: 1.75em; margin-right: 1.75em; margin-top: 1em; overflow-x: auto; overflow-y: auto; padding-bottom: 0.25em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0.25em; text-align: left;"># Config
# ------
# hooks.mailinglist
#   This is the list that all pushes will go to; leave it blank to not send
#   emails for every ref update.
# hooks.announcelist
#   This is the list that all pushes of annotated tags will go to.  Leave it
#   blank to default to the mailinglist field.  The announce emails lists
#   the short log summary of the changes since the last annotated tag.
# hooks.envelopesender
#   If set then the -f option is passed to sendmail to allow the envelope
#   sender address to be set
# hooks.emailprefix
#   All emails have their subjects prefixed with this prefix, or "[SCM]"
#   if emailprefix is unset, to aid filtering
# hooks.showrev
#   The shell command used to format each revision in the email, with
#   "%s" replaced with the commit id.  Defaults to "git rev-list -1
#   --pretty %s", displaying the commit id, author, date and log
#   message.  To list full patches separated by a blank line, you
#   could set this to "git show -C %s; echo".
#   To list a gitweb/cgit URL *and* a full patch for each change set, use this:
#     "t=%s; printf 'http://.../?id=%%s' \$t; echo;echo; git show -C \$t; echo"
#   Be careful if "..." contains things that will be expanded by shell "eval"
#   or printf.
# hooks.emailmaxlines
#   The maximum number of lines that should be included in the generated
#   email body. If not specified, there is no limit.
#   Lines beyond the limit are suppressed and counted, and a final
#   line is added indicating the number of suppressed lines.
#</pre>
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<span style="font-size: large;">參考文件：</span><br />
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<ul>
<li><a href="http://blog.longwin.com.tw/2011/05/git-commit-send-mail-notify-2011/">設定 Git Commit 更新 自動寄信通知</a> (Tsung, #git)</li>
<li><a href="https://github.com/sitaramc/gitolite/blob/pu/doc/hook-propagation.mkd">hook propagation in gitolite</a> (gitolite 官方文件, #但幫助不大) </li>
<li><a href="https://github.com/sitaramc/gitolite/blob/pu/doc/mirroring.mkd">mirroring gitolite servers</a> (gitolite 官方文件, #我在這參考 mirror 作法找到 hook 的接點)</li>
<li><a href="https://github.com/sitaramc/gitolite/blob/pu/doc/gitolite.rc.mkd">configuring gitolite's advanced features -- the .gitolite.rc file</a> (gitolite 官方文件, #.rc 檔案設定方式參考)</li>
<li><a href="http://blog.gslin.org/archives/2011/12/19/2805/gitolite-%E7%9A%84-hook/">gitolite 的 hook…</a> (gslin, #gitolite #很重要的 hint)</li>
<li><a href="http://stackoverflow.com/questions/5055190/how-to-setup-post-receive-email-git-hook-with-gitolite">How to setup post-receive-email Git hook with Gitolite</a> (stackoverflow)</li>
</ul>
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Setup Gitolite Hook post-receive-email

設定 Gitolite 範圍中每個 repository 在每次收到 git push 之後就通知該 repository 相關人員，需要設定 hook 機制。但是 gitolite 和 git 的設定方式有些不同，尋覓許多文件後終於找到實作的方式成功 :) 環境 ...