sed completed.

StevenSLXie · StevenSLXie · commit 4a3961ba41b2 · 2014-12-20T17:55:05.000+08:00
diff --git a/&#25945;&#31243;.md b/&#25945;&#31243;.md
@@ -557,13 +557,7 @@ sed -i '.tmp' 's/But/but/g' test-2.txt
 
 &#36825;&#20010;&#30475;&#36215;&#26469;&#26377;&#28857;&#29087;&#24713;&#23545;&#19981;&#23545;&#65311;&#22914;&#26524;&#20320;&#27604;&#36739;&#20043;&#21069;&#30340;&#35821;&#21477;&#65292;&#20250;&#21457;&#29616;&#22810;&#20102;&#19968;&#20010;`g`&#12290;&#22312;&#36825;&#37324;&#65292;&#22914;&#26524;&#19981;&#21152;`g`&#21017;&#21482;&#20250;&#26367;&#25442;&#27599;&#34892;&#30340;&#31532;&#19968;&#20010;`But`&#65292;&#32780;&#21152;`g`&#21017;&#20250;&#26367;&#25442;&#25152;&#26377;&#30340;`But`&#12290;&#22914;&#26524;&#20320;&#21482;&#26159;&#35201;&#26367;&#25442;&#26576;&#19968;&#20010;&#20301;&#32622;&#30340;`But`&#65292;&#27604;&#22914;&#31532;&#19977;&#20010;&#65292;&#21017;&#21487;&#20197;`sed -i '.tmp' 's/But/but/3' test-2.txt`&#12290;
 
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+&#26356;&#22810;&#30340;`sed`&#29992;&#27861;&#65292;&#21487;&#20197;&#21442;&#32771;&#65306;http://www.grymoire.com/Unix/Sed.html#uh-1 &#12290;
 
 <h4>9. &#36755;&#20986;&#36755;&#20837;</h4>
 <h4>10. &#20989;&#25968;</h4>
@@ -576,5 +570,5 @@ sed -i '.tmp' 's/But/but/g' test-2.txt
 <li><a href="http://www.tutorialspoint.com/unix/index.htm">3. Unix Tutorial Point</a></li>
 <li><a href="http://linux.about.com/">4. about.com</a></li>
 <li><a href="http://www.grymoire.com/Unix/Sed.html#uh-1">5. Sed - An Introduction and Tutorial by Bruce Barnett</a></li>
-<li><a href="http://www.thegeekstuff.com/2009/09/unix-sed-tutorial-replace-text-inside-a-file-using-substitute-command/">The Geek Stuff</a></li>
+<li><a href="http://www.thegeekstuff.com/2009/09/unix-sed-tutorial-replace-text-inside-a-file-using-substitute-command/">6. The Geek Stuff</a></li>
 </ul>

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 这个看起来有点熟悉对不对？如果你比较之前的语句，会发现多了一个`g`。在这里，如果不加`g`则只会替换每行的第一个`But`，而加`g`则会替换所有的`But`。如果你只是要替换某一个位置的`But`，比如第三个，则可以`sed -i '.tmp' 's/But/but/3' test-2.txt`。
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 +更多的`sed`用法，可以参考：http://www.grymoire.com/Unix/Sed.html#uh-1 。
 <h4>9. 输出输入</h4>
 <h4>10. 函数</h4>
 <li><a href="http://www.tutorialspoint.com/unix/index.htm">3. Unix Tutorial Point</a></li>
 <li><a href="http://linux.about.com/">4. about.com</a></li>
 <li><a href="http://www.grymoire.com/Unix/Sed.html#uh-1">5. Sed - An Introduction and Tutorial by Bruce Barnett</a></li>
 -<li><a href="http://www.thegeekstuff.com/2009/09/unix-sed-tutorial-replace-text-inside-a-file-using-substitute-command/">The Geek Stuff</a></li>
 +<li><a href="http://www.thegeekstuff.com/2009/09/unix-sed-tutorial-replace-text-inside-a-file-using-substitute-command/">6. The Geek Stuff</a></li>
 </ul>