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1¡¢diff
--------------------
NAME
   diff - find differences between two files
SYNOPSIS
   diff [options] from-file to-file
--------------------
¼òµ¥µÄ˵,diff µÄ¹¦ÄܾÍÊÇÓÃÀ´±È½ÏÁ½¸öÎļþµÄ²»Í¬,È»ºó¼Ç¼ÏÂÀ´,Ò²¾ÍÊÇËùνµÄ diff ²¹¶¡¡£Óï·¨
¸ñʽ:diff ¡¾Ñ¡Ïî¡¿ Ô´Îļþ(¼Ð) Ä¿µÄÎļþ(¼Ð),¾ÍÊÇÒª¸øÔ´Îļþ(¼Ð)´ò¸ö²¹¶¡,ʹ֮±ä³ÉÄ¿
µÄÎļþ(¼Ð),ÊõÓïÒ²¾ÍÊÇ“Éý¼¶”¡£ÏÂÃæ½éÉÜÈý¸ö×îΪ³£ÓÃÑ¡Ïî:
-r ÊÇÒ»¸öµÝ¹éÑ¡Ïî,ÉèÖÃÁËÕâ¸öÑ¡Ïî,diff »á½«Á½¸ö²»Í¬°æ±¾Ô´´úÂëĿ¼ÖеÄËùÓжÔÓ¦ÎļþÈ«²¿¶¼½ø
ÐÐÒ»´Î±È½Ï,°üÀ¨×ÓĿ¼Îļþ¡£
-N Ñ¡ÏîÈ·±£²¹¶¡Îļþ½«ÕýÈ·µØ´¦ÀíÒѾ­´´½¨»òɾ³ýÎļþµÄÇé¿ö¡£
-u Ñ¡ÏîÒÔͳһ¸ñʽ´´½¨²¹¶¡Îļþ,ÕâÖÖ¸ñʽ±Èȱʡ¸ñʽ¸ü½ô´ÕЩ¡£
2¡¢patch
------------------
NAME
     patch - apply a diff file to an original
SYNOPSIS
     patch [options] [originalfile [patchfile]]
     but usually just
     patch -pnum <patchfile>
------------------
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ÏÂÃæ½éÉܼ¸¸ö×î³£ÓÃÑ¡Ïî:
-p0 Ñ¡ÏîÒª´Óµ±Ç°Ä¿Â¼²éÕÒÄ¿µÄÎļþ(¼Ð)
-p1 Ñ¡ÏîÒªºöÂÔµôµÚÒ»²ãĿ¼,´Óµ±Ç°Ä¿Â¼¿ªÊ¼²éÕÒ¡£
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--- old/modules/pcitable         Mon Sep 27 11:03:56 1999
+++ new/modules/pcitable           Tue Dec 19 20:05:41 2000
   Èç¹ûʹÓòÎÊý-p0,ÄǾͱíʾ´Óµ±Ç°Ä¿Â¼ÕÒÒ»¸ö½Ð×ö old µÄÎļþ¼Ð,ÔÚËüÏÂÃæÑ°ÕÒ modules ϵÄ
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