查找问题的利器 - Git Blame

原文： http://gitbook.liuhui998.com/5_5.html

 如果你要查看文件的每个部分是谁修改的, 那么 git blame 就是不二选择. 只要运行'git blame [filename]', 你就会得到整个文件的每一行的详细修改信息:包括SHA串,日期和作者:

 

译者注: Git采用SHA1做为hash签名算法, 在本书中,作者为了表达方便,常常使用SHA来代指SHA1. 如果没有特别说明, 本书中的SHA就是SHA1的代称.

$ git blame sha1_file.c

...

0fcfd160 (Linus Torvalds  2005-04-18 13:04:43 -0700    8)  */

0fcfd160 (Linus Torvalds  2005-04-18 13:04:43 -0700    9) #include "cache.h"

1f688557 (Junio C Hamano  2005-06-27 03:35:33 -0700   10) #include "delta.h"

a733cb60 (Linus Torvalds  2005-06-28 14:21:02 -0700   11) #include "pack.h"

8e440259 (Peter Eriksen   2006-04-02 14:44:09 +0200   12) #include "blob.h"

8e440259 (Peter Eriksen   2006-04-02 14:44:09 +0200   13) #include "commit.h"

8e440259 (Peter Eriksen   2006-04-02 14:44:09 +0200   14) #include "tag.h"

8e440259 (Peter Eriksen   2006-04-02 14:44:09 +0200   15) #include "tree.h"

f35a6d3b (Linus Torvalds  2007-04-09 21:20:29 -0700   16) #include "refs.h"

70f5d5d3 (Nicolas Pitre   2008-02-28 00:25:19 -0500   17) #include "pack-revindex.h"628522ec (Junio C Hamano              2007-12-29 02:05:47 -0800   18) #include "sha1-lookup.h"

...

你也可以用"-L"参数在命令(blame)中指定开始和结束行:

$>git blame -L 160,+10 sha1_file.c 

ace1534d (Junio C Hamano 2005-05-07 00:38:04 -0700       160)}

ace1534d (Junio C Hamano 2005-05-07 00:38:04 -0700       161)

0fcfd160 (Linus Torvalds 2005-04-18 13:04:43 -0700       162)/*

0fcfd160 (Linus Torvalds 2005-04-18 13:04:43 -0700       163) * NOTE! This returns a statically allocate

790296fd (Jim Meyering   2008-01-03 15:18:07 +0100       164) * careful about using it. Do an "xstrdup()

0fcfd160 (Linus Torvalds 2005-04-18 13:04:43 -0700       165) * filename.

ace1534d (Junio C Hamano 2005-05-07 00:38:04 -0700       166) *

ace1534d (Junio C Hamano 2005-05-07 00:38:04 -0700       167) * Also note that this returns the location

ace1534d (Junio C Hamano 2005-05-07 00:38:04 -0700       168) * SHA1 file can happen from any alternate 

d19938ab (Junio C Hamano 2005-05-09 17:57:56 -0700       169) * DB_ENVIRONMENT environment variable if i