Escaped Unicode, Decimal NCRs, Hexadecimal NCRs, UTF-8 Converter (轉貼)

http://www.endmemo.com/unicode/unicodeconverter.php

好用的線上工具，輸入Unicode Character，
就可以轉成各種不同的格式：
例如UTF-8 Code.

特殊符號的英文讀法(轉貼)

特殊符號的英文讀法

equal sign (=)  decimal points (.)  semicolon (;)  increment (++) operators  decrement (--) operators  ( ) Parenthesis  { } Braces  [ ] Brackets  , Comma  ; Semicolon  ' Quote  @ At  +　 plus　加號；正號  -　 minus　減號；負號  ±　plus or minus　正負號  ×　is multiplied by　乘號  ÷　is divided by　除號  ＝　is equal to　等號  ≠　is not equal to　不等號  ≡　is equivalent to　全等於號  ≌　is equal to or approximately equal to　等於或約等於號  ≈　is approximately equal to　約等於號  ＜　is less than　小於號  ＞　is more than　大於號  ≮　is not less than　不小於號  ≯　is not more than　不大於號  ≤　is less than or equal to　小於或等於號  ≥　is more than or equal to　大於或等於號  %　 per cent　百分之…  ‰　per mill　千分之…  ∞　infinity　無限大號  ∝　varies as　與…成比例  √　(square) root　平方根  ∵　since; because　因爲  ∴　hence　所以  ∷　equals, as (proportion)　等於，成比例  ∠　angle　角  ⌒　semicircle　半圓  ⊙　circle　圓  ○　circumference　圓周  π　pi 圓周率  △　triangle　三角形  ⊥　perpendicular to　垂直於 ∪　union of　聯集  ∩　intersection of 交集  ∫　the integral of …的積分  ∑　(sigma) summation of　總和  °　degree　度  ′　minute　分  〃　second　秒  ℃　Celsius system　攝氏度  {　open brace, open curly　左大括弧  }　close brace, close curly　右大括弧  (　open parenthesis, open paren　左小括號  )　close parenthesis, close paren　右小括號  () brakets/ parentheses　括弧  [　open bracket 左中括號  ]　close bracket 右中括號  [] square brackets　中括號  .　period, dot　句號，點  　vertical bar, vertical virgule　豎線  &　ampersand, and, reference, ref　和，引用  *　asterisk, multiply, star, pointer　星號，乘號，星，指標  /　slash, divide, oblique 斜線，斜杠，除號  //　slash-slash, comment 雙斜線，注釋符  #　pound　井號  \　backslash, sometimes escape　反斜線轉義符，有時表示轉義符或續行符  ~　tilde　波浪符  .　full stop　句號  ,　comma　逗號  :　colon　冒號  ;　semicolon　分號  ?　question mark　問號  !　exclamation mark (英式英語) exclamation point (美式英語)  '　apostrophe　撇號  -　hyphen　連字號  -- dash 破折號  ...　dots/ ellipsis　省略號  "　single quotation marks 單引號  ""　double quotation marks 雙引號  ‖ parallel 雙線號  &　ampersand = and  ～　swung dash 相似  §　section; division 分節號  →　arrow 箭號；

(轉貼)How do I tell what type my shell is

How do I tell what type my shell is

up vote6down votefavorite 1

How can I tell what type my shell is? ie, whether it's traditional sh, bash, ksh, csh, zsh etc. Note that checking $SHELL or $0 won't work because $SHELL isn't set by all shells, so if you start in one shell and then start a different one you may still have the old $SHELL. $0 only tells you where the shell binary is, but doesn't tell you whether /bin/sh is a real Bourne shell or bash. I presume that the answer will be "try some features and see what breaks", so if anyone can point me at a script that does that, that'd be great. 3down vote Try to locate the shell path using the current shell PID: ps -p $$ It should work at least with sh, bash and ksh. share|improve this answer answered Mar 2 '11 at 11:20 ziu 1,271726

(轉貼)Android 反編譯與防止被反編譯

Android 反編譯與防止被反編譯

Android App使用Java語言進行開發，因此十分容易就可以被反編譯出近乎原始的程式碼。也因為這個特性，許多人在寫Android App的時候會喜歡去反編譯別人寫好的程式，再挪為己用，雖然很不道德，但這也是一種有效提升軟體開發速度的方法。但換個角度想，如果是自己寫的程式碼被盜走的話，這就對自己不太有利了，所以學習如何防止自己程式碼被偷也是一個很重要的課題。

Android App的安裝檔案是副檔名為.apk的檔案，可以直接在Android環境下執行，將App安裝好。若要將App上架到Google Play上，必須要先將Android專案輸出成簽署(Signed)過的apk檔。再將這個apk檔案上傳到Google Play上發佈出去。將App上架後，其他使用者就可以透過Google Play直接安裝該App。

很明顯地，提供apk檔案給別人安裝App，是十分危險的事情，因為apk檔案只要經過簡單的步驟(之後會提到)就可以反編譯出原始的程式碼。但如果覺得將App上架到Google Play上就一定安全的話，那就大錯特錯了，因為從Google Play上安裝的App，也是有辦法拿到它的apk檔。

反編譯Android程式

首先要取得Android App的apk檔案，接著使用「dex2jar」來將它轉為jar檔。

https://code.google.com/p/dex2jar/

dex2jar在命令列下使用，命令格式如下：

d2j-dex2jar.sh apk路徑

執行命令後，稍等一下子，jar檔案就產生出來了。

接著再依照這篇文章來反編譯jar檔案。

防止Android程式被反編譯

反編譯Android程式的方式可以不必學，但防止反編譯的方式一定要會！

Android ProGuard

Android SDK中提供了ProGuard來保護與最佳化Android App的安裝檔。身為一位稱職的Android程式設計師，在Android App發佈或是上架之前一定要使用ProGuard來保護程式碼，避免程式遭有心人士偷走。

啟用ProGuard

在Android專案根目錄下，有個「project.properties」檔案，找到以下字串，並移除掉前面的「#」，即可啟用ProGuard。

#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt

這行文字的意思是告訴Eclipse在編譯Android的時候使用proguard對程式碼進行混淆，並指定混淆的參數設定檔。預設的Android專案會在開頭加上「#」，表示此行文字為註解，也就是沒有開啟ProGuard。

使用ProGuard

啟用ProGuard之後，往後使用Android的Export工具來輸出專案，都會自動把程式碼給混淆。無須再進行而外的動作。

啟用ProGuard可能會遭遇的問題

由於有些程式是不可以被混淆的，例如有使用到「Class.forName」這類方法來呼叫的套件。可以藉由修改Android專案目錄下的ProGuard設定檔「proguard-project.txt」，加入-keep參數來保留指定的程式碼不被混淆。通常-dontwarn參數也會跟-keep合用，目的是要讓ProGuard不要去檢查指定Class下程式碼的錯誤(當然若有出現錯誤再加也不遲)。

有許多程式用了ProGuard之後會出現型別轉換錯誤，可以加上「-keepattributes Signature」參數，保留程式的簽名。

以下是proguard-project.txt的設定參考：

1 2 3 4 5 6 7 8 9

-keep class com.google.** { *; } -dontwarn com.google.**   -keep class com.facebook.** { *; } -dontwarn com.facebook.**   -keep class org.apache.** { *; } -dontwarn org.apache.** -keepattributes Signature

混淆後的程式碼，如果被反編譯，就沒什麼人看得懂啦！

分類： Android、研究分享
標籤： Android、apk、App、Proguard、上架、反編譯、混淆、程式語言、防止反編譯

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How can I get the Google cache age of any URL or web page?

http://stackoverflow.com/questions/4560400/how-can-i-get-the-google-cache-age-of-any-url-or-web-page

 How can I get the Google cache age of any URL or web page?

Use the URL

http://webcache.googleusercontent.com/search?q=cache:

Example:

http://webcache.googleusercontent.com/search?q=cache:stackoverflow.com

It contains a header like this:

This is Google's cache of http://stackoverflow.com/. It is a snapshot of the page as it appeared on 21 Aug 2012 11:33:38 GMT. The current page could have changed in the meantime. Learn more
Tip: To quickly find your search term on this page, press Ctrl+F or ⌘+F (Mac) and use the find bar.

How to Add "Open with Notepad" to Right-Click (轉貼)

同理可應用到Notepad++，
參：http://www.instructables.com/id/How-to-Add-Open-with-Notepad-to-Right-Click/

How to Add "Open with Notepad" to Right-Click

by laminterious

 Download

11 Steps

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I personally hate to use "open with" due to the time, even if its only a few seconds, and having to then remember where exactly a certain program is located in my directory.

This will show you how to add ANY program to the Right-Click (Context Menu for all of your Files).

It's Easy, you cant screw it up, and it saves a bunch of time and hassle.

Since we will be dealing with regedit, and not everyone is familiar with it, i will be breaking down the steps to very simple, easy, and concise steps that anyone can follow.

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Step 1: First

Go to Start and open Run

Step 2: Second

Type in regedit.exe and click OK.

Step 3: Third

Find and expand (click on the + to the left) HKEY_CLASSES_ROOT

Step 4: Fourth

Browse down to the * key and expand it (click on the + to the left of the folder)

Step 5: Fifth

Find the key shell

Step 6: Sixth

Right Click on the key shell, go to New and create a new Key

Step 7: Seventh

Name that Key "Open with Notepad"

Right click on the Open with Notepad key and make another Key

Step 8: Eighth

Name the new Key "command"

Step 9: Ninth

Click on the command key and double click on 'the (Default) value

Step 10: Tenth

Type in "notepad.exe %1" There is a space between "notepad.exe" and "%1"

Click on OK

Step 11: Finished

Close regedit and marvel at the ease of opening text documents!

Effects should occur immediately.

Remember:

This can be used for any and all programs.

In case you are just completely confused, use the following zip file (which also comes with a handy uninstall) that will change your regedit key accordingly)

Download OpenWithNotepad registry hack