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glibc_fwrite_warning.patch
--- memcached-1.4.20/memcached.c.orig  2014-05-11 02:59:58.000000000 -0400 +++ memcached-1.4.20/memcached.c  2015-01-13 18:05:43.000000000 -0500 @@ -1274,7 +1274,7 @@      if (settings.verbose > 1) {          fprintf(stderr, "<%d %s ", c->sfd, should_touch ? "TOUCH" : "GET"); -        fwrite(key, 1, nkey, stderr); +        if (fwrite(key, 1, nkey, stderr)) { /* this is a no-op block */ }          fputc('\n', stderr);      }
到memcache目录下：
[root@localhost memcached-1.4.25]# patch -p0 < glibc_fwrite_warning.patch
can't find file to patch at input line 3
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|--- memcached-1.4.20/memcached.c.orig  2014-05-11 02:59:58.000000000 -0400
|+++ memcached-1.4.20/memcached.c       2015-01-13 18:05:43.000000000 -0500
--------------------------
File to patch: memcached.c
patching file memcached.c
Hunk #1 succeeded at 1283 (offset 9 lines).

=====================================================



1) diff/patch这对工具在数学上来说，diff是对2个集合求差，patch是求和

diff A B > C 生成A和B的diff文件C

patch A C 给A打上diff文件得到B

patch -R B C B还原为A

2) 内核补丁

生成

diff -uNr linux-2.6.xxx linux-2.6.xxx.1 > diff.patch

升级

cp diff.patch linux-2.6.xxx/.

cd linux-2.6.xxx

patch -p1 < diff.patch

可以参考$(linux_src)/Documentation/applying_patches.txt

还可以参考这一篇：http://www.hzlitai.com.cn/bbs/dispbbs.asp?boardid=28&id=1215

作者：jackxiang@向东博客 专注WEB应用 构架之美 --- 构架之美，在于尽态极妍 | 应用之美，在于药到病除
地址：https://jackxiang.com/post/2048/
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