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。
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
来自：查找问题的利器 - Git Blame
参考：
git community book中文版
git-blame(1) Manual Page
