rickey-nctu.blogspot.com

Doro One Two Three

Doro One Two Three. 若在 Linux Kernel 內，想追蹤每個函式的呼叫流程，第一個會想到的工具應該是 ftrace. 65307;那針對 user space 的程式是否有類似的東西？用 gdb，再加上一些簡單 script 就可以完成。以 xdotool 為例，舉例來說，xdotool getmouselocation 將會得當前鼠標的位置，正常狀況下輸出結果如下：. Xdotool getmouselocation findclient: 65011716 findclient: 65011716 x:2769 y:656 screen:0 window:65011716. 0 libc start main at? 先安裝 debug symbol，可以參考這裡. 將 debug symbol 來源設好。接著安裝這 2 個套件 libxdo2-dbgsym xdotool-dbgsym. 準備工作完成。把 gdb 跑起來吧！ 0 libc start main at? GDB 指令檔：supertrace.gdb. 裡頭會載入 supertrace.py &...

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Doro One Two Three. 若在 Linux Kernel 內，想追蹤每個函式的呼叫流程，第一個會想到的工具應該是 ftrace. 65307;那針對 user space 的程式是否有類似的東西？用 gdb，再加上一些簡單 script 就可以完成。以 xdotool 為例，舉例來說，xdotool getmouselocation 將會得當前鼠標的位置，正常狀況下輸出結果如下：. Xdotool getmouselocation findclient: 65011716 findclient: 65011716 x:2769 y:656 screen:0 window:65011716. 0 libc start main at? 先安裝 debug symbol，可以參考這裡. 將 debug symbol 來源設好。接著安裝這 2 個套件 libxdo2-dbgsym xdotool-dbgsym. 準備工作完成。把 gdb 跑起來吧！ 0 libc start main at? GDB 指令檔：supertrace.gdb. 裡頭會載入 supertrace.py &...

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2 skip to sidebar

3 使用 gdb 以樹狀方式將函式流程印出

4 若搭配本文將介紹的方法，輸出結果如下：

5 是不是整個程式內函式呼叫順序都一目瞭然

6 快速開始

7 深入一點

8 標籤： gdb

9 linux

10 programming

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skip to main,skip to sidebar,使用 gdb 以樹狀方式將函式流程印出,若搭配本文將介紹的方法，輸出結果如下：,是不是整個程式內函式呼叫順序都一目瞭然,快速開始,深入一點,標籤： gdb,linux,programming,圖：在電視前多放了一塊板，還好不會太突兀,還是稍微提一下前三篇提到的四隻主要程式,webpy,iremote android app,serial tx c,ir txcpp,及這篇,完整程式可參考 cdc acm c,標籤： arduino,ubuntu

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Doro One Two Three | rickey-nctu.blogspot.com Reviews

https://rickey-nctu.blogspot.com

Doro One Two Three. 若在 Linux Kernel 內，想追蹤每個函式的呼叫流程，第一個會想到的工具應該是 ftrace. 65307;那針對 user space 的程式是否有類似的東西？用 gdb，再加上一些簡單 script 就可以完成。以 xdotool 為例，舉例來說，xdotool getmouselocation 將會得當前鼠標的位置，正常狀況下輸出結果如下：. Xdotool getmouselocation findclient: 65011716 findclient: 65011716 x:2769 y:656 screen:0 window:65011716. 0 libc start main at? 先安裝 debug symbol，可以參考這裡. 將 debug symbol 來源設好。接著安裝這 2 個套件 libxdo2-dbgsym xdotool-dbgsym. 準備工作完成。把 gdb 跑起來吧！ 0 libc start main at? GDB 指令檔：supertrace.gdb. 裡頭會載入 supertrace.py &...

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rickey-nctu.blogspot.com

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Doro One Two Three: 2011/06

http://rickey-nctu.blogspot.com/2011_06_01_archive.html

Doro One Two Three. 前陣子開始習慣用zim來當做個人筆記的軟體，在使用zim之前我survey了許多其他筆記軟體，像是Evernote，Nevernote，Tomboy，gnote等。最後我還是選擇了zim，主要有以下原因. 內建常用格式 (h1, h2, bold, italy, code.). Zim search是一個視窗程式，以wxPython寫成，輸入欲搜尋字串，它會將有此字串的文件列出，並依照權重排序，雙點任何列便可直接在zim中開啟該文件。此工具截圖如下. 這隻程式接受2個參數，第一為zim筆記本名，第二為筆記本路徑，zim裡的tools - custom tools設定如下. 源碼find.py可由此抓到 https:/ github.com/fcwu/zim-plugins. 為了分享我的筆記給其他同仁觀看，我架了dokuwiki當做分享平台，dokuwiki的儲存格式(文字檔)及wiki語法跟zim只有些許的不同，為了做語法的轉換及附件(圖片，或附檔)的發佈，因此我寫了這個腳本。 65292;user name為 doro.

2

Doro One Two Three: 2012/08

http://rickey-nctu.blogspot.com/2012_08_01_archive.html

Doro One Two Three. VIM: 使用 pyclewn 遠端除錯 C 程式. 是一套可以用 vim 當做 front-end，gdb or pdb 當做 back-end 的 debugger。相較於同類型的玩具可以參考 clewn、vimgdb、GdbFromVim。之前我是用 cgdb 或是 clewn 這套，今天上官網上看到他推薦 pyclewn 便抓來試試，才發現就易用性來說它真的很不錯。因為目前我的環境都需要用 remote debugger，所以就順道帶過。請先在官網上抓 pyclewn*.tar.gz 後，解壓縮，再用. Sudo python setup.py install. 安裝即可，如要將 vim plugin 安裝到特定資料匣可在 vimdir 的環境變數. Sudo vimdir=/home/dorowu/src/gdb/pyclewn-vim/ python setup.py install. 1 在 target 上使用 gdbserver 執行 ./Boxee 並在 port 1234 等待 gdb 連線. 2 在 host 上的 gvim 裡 gvim.

3

Doro One Two Three: 2013/06

http://rickey-nctu.blogspot.com/2013_06_01_archive.html

Doro One Two Three. Linux Power and Battery Life. 這篇文章整理之前在看 Ubuntu 省電機制的。 Linux 系統中的電池資訊在 sysfs 裡都找得到，如下。或是直接使用 gnome-power-statistics 來看也可以，如上圖。 U-Latitude-E6440:/sys/class/power supply/BAT01 ls alarm current now model name status uevent charge full cycle count power subsystem voltage min design charge full design device present technology voltage now charge now manufacturer serial number type. 有時沒儀器可以量時，用 script 來計算是蠻方便的。之前用了 2 種方式來讓系統更省電。 Append boot coomand "pcie aspm=force". GTK 3 and CSS in Python.

4

Doro One Two Three: 2013/10

http://rickey-nctu.blogspot.com/2013_10_01_archive.html

Doro One Two Three. 有時會想要在任意的網頁上加入一些特殊設定或是需要重新排版成看起來比較爽的頁面，舉例來說：在 facebook 的登入畫面做一個快速切換帳號的按紐；又或是最近在用 Lauchpad 的 bugs 覺得它的排版很鳥，所以自己重新用 jQuery 的 tablesorter 重新排一下。想要解決這樣的問題，一來是可以寫瀏覽器的外掛來改，二或是用我今天要介紹的方法 userscript 來達成，以 firefox 的使用者需要先安裝 greasemonkey. 65292;chrome 的使用者則要安裝 tampermonkey. 為例，原先 Launchpad 的 bug 列表長這樣. 經過了 LpTable 的 script 會變這樣. Firefox 的使用者來說，在安裝完 greasemonkey 後，再到 LpTable 的頁面. 基本上寫這些 script 如果已有網頁基本能力寫起來很容易，因此我就在做 LpTable 用到的一些手法來介紹。要加入自訂的 CSS 也有幾種方法可以用，舉例來說第一種用 GM getResourceText. Windows)...

5

Doro One Two Three: 2013/08

http://rickey-nctu.blogspot.com/2013_08_01_archive.html

Doro One Two Three. Automated GUI testing of Linux Application. 前陣子在用 Ubuntu 開機光碟自動化時，查了一下要如何用程式來控制 UI，在 Stackoverflow 上查到了一篇文章. There are two different kind of tools that I know:. Based on the accessibility layer: LDTP, dogtail, strongwind. Based on image recognition: sikuli, xpresser. 試用了其中的 LDTP 發覺十分好用，今天便來介紹這個工具. Sudo apt-get install python-ldtp. 在開始之前，想了解更多一定要參考一下這份 LDTP Tutorial. 開始使用 ldtp，由於是它是藉著 a11y 來控制 UI，所要先將 a11y enable. 以下例子會用到的 ldtp functions 有. From ldtp import *. 找一下 gedit 裡有那些 menu 可以按.

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Doro One Two Three. 若在 Linux Kernel 內，想追蹤每個函式的呼叫流程，第一個會想到的工具應該是 ftrace. 65307;那針對 user space 的程式是否有類似的東西？用 gdb，再加上一些簡單 script 就可以完成。以 xdotool 為例，舉例來說，xdotool getmouselocation 將會得當前鼠標的位置，正常狀況下輸出結果如下：. Xdotool getmouselocation findclient: 65011716 findclient: 65011716 x:2769 y:656 screen:0 window:65011716. 0 libc start main at? 先安裝 debug symbol，可以參考這裡. 將 debug symbol 來源設好。接著安裝這 2 個套件 libxdo2-dbgsym xdotool-dbgsym. 準備工作完成。把 gdb 跑起來吧！ 0 libc start main at? GDB 指令檔：supertrace.gdb. 裡頭會載入 supertrace.py &...

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