grep examples

# 挑出超過 1000 ms 的資料
110.txt: 100%    800 (longest request)
111.txt: 100%   2538 (longest request)
112.txt: 100%   1209 (longest request)
113.txt: 100%   2341 (longest request)
114.txt: 100%    829 (longest request)
115.txt: 100%   2506 (longest request)
116.txt: 100%    829 (longest request)
117.txt: 100%   2372 (longest request)
118.txt: 100%    862 (longest request)
119.txt: 100%   5681 (longest request)
120.txt: 100%    803 (longest request)

ANS： grep -E "%\s{3}\S"
前面一定要加入 % ，不然就如圖片所示，有 4個空白的列也會符合。

The Apache Hints of Windows Platform

Apache 2.4.23

# Check Compiled modules
C:\Apache\bin>httpd -l
Compiled in modules:
  core.c
  mod_win32.c
  mpm_winnt.c
  http_core.c
  mod_so.c

# 記憶體調校
如果做壓力測試時，發現 httpd 的虛擬記憶體不斷的上升，此時可以調整以下參數
1. Keep Alive：
關掉 Keep Alive，或是減少 MaxKeepAliveRequests 以及減少 KeepAliveTimeout，Apache 為了保持連線，會保留記憶體而未釋放。
2. MaxConnectionsPerChild (after 2.3.9) or MaxRequestsPerChild (before 2.3.9)：
Windows 的 Apache 共有 2 個 httpd.exe process，其中 1個是子進程，負責處理所有的 requests。當設置這 2 個參數後，如果達到 Max 的 Connections or Requests，母進程便會殺掉子進程，因此就能釋放原本被佔用的記憶體，此預設值為 0 表示無限制。

# AcceptPathInfo
This directive controls whether requests that contain trailing pathname information that follows an actual filename (or non-existent file in an existing directory) will be accepted or rejected.
example: /test/here.html/more
如果啟用的話，則 /more 便會視為 PATH_INFO，此預設值為 Default，處理 scripts 時 accepted，其他則 rejected。

Autosize in wxWidgets with wxDev-C++

If you want the app to change it's layout when window is maximal, you must use sizers. There are many sizers in wxWidgets, such as wxBoxSizer, wxGridSizer and wxFlexGridSizer.

When I have two vertical parts in window and I want the bottom part is fixed size, I can use wxBoxSizer and put two panels on wxBoxSizer. Here is settings about these components.

wxBoxSizer:
Orientation is wxVertical.

wxPanel1(top):
wxALIGN_TOP is true.
wxEXPAND is true.
Stretch Factor is 1.

wxPanel2(bottom):
wxALIGN_BOTTOM is true.
wxEXPAND is true.

If you set Stretch Factor, the part will be adjusted size when window is maximal.

大法官觀後感

昨天去看了電影-大法官
覺得這部電影有很多點可以在看完後好好想想
But 人生總是會有 But ...

看完電影準備去運動時
開車由建國高架往南
剛從南京上閘道後就被後面一台小車撞到
我前面因為有車要下建國
當時我的車已踩煞車
幾乎是快停止的狀態
居然也能被撞到
不知道駕駛當時在想什麼

不過最白吃的還是我本人
當時看一下以為只撞到保險桿
就叫他開車要小心點
換來一句謝謝後就離開

開到公園後
下車仔細看看
才發現左輪上方板金受損
輪圈受損
保險桿也受損
害我一整個心情不好

幸好熟悉的輪胎行晚上有營業
晚上花了 7000 換掉 4 個輪圈
輪胎因為沒事故不用換掉
不然至少還要換掉 2 個才能平衡
再加上板金
我想這次被撞沒花個一萬塊跑不掉

那位大哥
遇到我是你運氣好
請你下次好好小心開車
車上還載著家人
為什麼不更小心點

可憐我的小白

How to catch windows message in wxWidgets

1. Add define in your header file.

WXLRESULT MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam);

2. Add implement in your cpp file.

WXLRESULT XXX::MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
{
    switch(message)
    {
        case WM_KEY:
            break;
        default:
            break;
    }  
 
    return ZZZ::MSWWindowProc(message, wParam, lParam);
 }

XXX is your class name and ZZZ is the base class that you derive.

3. You can catch the windows message what you want now.

Update wxWidgets' libs in wxDev-C++

Because the wxWidgets's version is 2.9.3 in wxDev-C++, I want to use the new version, this is the steps how to do:

My wxDev-C++'s installing path is "C:\wxDev-Cpp".

1. Download the wxWidget's source and unzip to C:\wxWidgets.
2. Open cmd window and type "set path=C:\wxDev-Cpp\MinGW32\bin". Then "cd wxWidgets\build\msw".
3. Type "mingw32-make -f makefile.gcc UNICODE=1 SHARED=0 BUILD=release MONOLITHIC=1".
4. After compiling it, copy "C:\wxWidgets\lib\gcc_lib\*.a" to C:\wxDev-Cpp\lib\wx\gcc_lib".
5. Replace "C:\wxDev-Cpp\include\common" from "C:\wxWidgets\include".
6. Copy "C:\wxWidgets\lib\gcc_lib\mswu\wx\setup.h" to "C:\wxDev-Cpp\include\common\wx".
7. Change wxWidgets's version in wxDev-C++ -> Tools -> Compiler Options -> Version info.
8. Before you compile old project, remember to del all *.o in "project\Objects\MingW".
9. Enjoy it.

Ubuntu 啟動相關檔案

/etc/init.d/xxxxx
啟動 script 放置處

/etc/rcx.d/
啟動 level 對應的服務 script, 由系統產生

為了避免影響其他服務
開機想要自動執行的
可以寫在 /etc/rc.local