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http://hi.baidu.com/issaria/blog/item/b04527ec816967d72f2e2184.html
2008-08-14 14:50
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diff -Naur olddir newdir > new-patch
- or -
diff -Naur oldfile newfile >new-patch
-p0 »¹ÊÇ-p1? patch ÃüÁîµÄĿ¼²ã´Î£º
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--- old/modules/pcitable Mon Sep 27 11:03:56 1999
+++ new/modules/pcitable Tue Dec 19 20:05:41 2000
ʹÓà -p0 ½«´ÓÄãµÄµ±Ç°Â·¾¶ÏÂѰÕÒÒ»¸ö“new"µÄ×ÓÎļþ¼Ð£¬È»ºóÔÚ"new"ÏÂÃæÑ°ÕÒ“modules”£¬È»ºóÔÚÆäÏÂÃæÑ°ÕÒ"pcitable"¡£
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Total patch sets of this kernel release: 157236
5337 person contribute their works to this kernel release.
Averagely, every person committed 29 patch sets.
299(5.60%) Chinese people contribute 6185(3.93%) patch ......

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from: http://cc.byexamples.com/20070520/tap-the-interrupt-signal/
When you hit control+c, you are actually send a SIGINT ( Interrupt signal ) to your program. By default, your program will be terminated after receiving SIGINT. But you can change the way of handling Interrupt signal.
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