git搜索--grep

1. 查找某个关键字（比如函数名）：

$ git grep xmmap


config.c:               contents = xmmap(NULL, contents_sz, PROT_READ,
diff.c:                 s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd, 0);
git-compat-util.h:     extern void *xmmap(void *start, size_t length, int prot, int fla
read-cache.c:         mmap = xmmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE,
refs.c:                 log_mapped = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, logfd, 0);
sha1_file.c:             map = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, fd, 0);
sha1_file.c:               idx_map = xmmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd, 0);
sha1_file.c:                    win->base = xmmap(NULL, win->len,
sha1_file.c:                    map = xmmap(NULL, *size, PROT_READ, MAP_PRIVATE, f
sha1_file.c:            buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
wrapper.c:             void *xmmap(void *start, size_t length,

1.1 如果要显示行号，添加‘-n’选项：

$ git grep -n xmmap



config.c:1016:          contents = xmmap(NULL, contents_sz, PROT_READ,
diff.c:1833:                 s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd,
git-compat-util.h:291:     extern void *xmmap(void *start, size_t length, int prot, int
read-cache.c:1178:      mmap = xmmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_
refs.c:1345:          log_mapped = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, logfd, 0);
sha1_file.c:377:        map = xmmap(NULL, mapsz, PROT_READ, MAP_PRIVATE, fd, 0);
sha1_file.c:479:        idx_map = xmmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd
sha1_file.c:780:                        win->base = xmmap(NULL, win->len,
sha1_file.c:1076:                       map = xmmap(NULL, *size, PROT_READ, MAP_PR
sha1_file.c:2393:               buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd
wrapper.c:89:           void *xmmap(void *start, size_t length,

1.2 如果只显示文件名，添加‘--name-only’选项：

$ git grep --name-only xmmap



config.c
diff.c
git-compat-util.h
read-cache.c
refs.c
sha1_file.c
wrapper.c

1.3 统计每个文件里有多少行匹配内容，添加‘-c’选项：

$ git grep -c xmmap


config.c:1
diff.c:1
git-compat-util.h:1
read-cache.c:1
refs.c:1
sha1_file.c:5
wrapper.c:1

1.4 查找git仓库里某个特定版本里的内容，添加tag名或sha号：

$ git grep xmmap v1.5.0


v1.5.0:config.c:                contents = xmmap(NULL, st.st_size, PROT_READ,
v1.5.0:diff.c:          s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd,
v1.5.0:git-compat-util.h:static inline void *xmmap(void *start, size_t length,
v1.5.0:read-cache.c:                    cache_mmap = xmmap(NULL, cache_mmap_size, 
v1.5.0:refs.c:  log_mapped = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, logfd
v1.5.0:sha1_file.c:     map = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 
v1.5.0:sha1_file.c:     idx_map = xmmap(NULL, idx_size, PROT_READ, MAP_PRIVATE, fd
v1.5.0:sha1_file.c:                     win->base = xmmap(NULL, win->len,
v1.5.0:sha1_file.c:     map = xmmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 
v1.5.0:sha1_file.c:             buf = xmmap(NULL, size, PROT_READ, MAP_PRIVATE, fd

1.5 查找git仓库里某个特定版本、特定文件里的内容（省略版本，默认当前版本），添加tag名或sha号、文件名：

$ git grep xmmap v1.5.0 diff.c


v1.5.0:diff.c:          s->data = xmmap(NULL, s->size, PROT_READ, MAP_PRIVATE, fd,

2. 某些关键字的逻辑组合

2.1 与逻辑：某一行既包括...又包括...

------------------->$ git grep -e 'pu' --and -e 'lic'
a.txt:public
c.txt:public
c.txt:public

2.2 或逻辑：某一行包括...或者包括...

------------------->$ git grep -e 'public' --or -e 'void'
a.txt:public
a.txt:void
b.txt:void
c.txt:public
c.txt:public

--or 是默认行为，如果省略：

------------------->$ git grep -e 'public' --or -e 'void'
a.txt:public
a.txt:void
b.txt:void
c.txt:public
c.txt:public

------------------->$ git grep -e 'public' -e 'void'
a.txt:public
a.txt:void
b.txt:void
c.txt:public
c.txt:public

2.3 非逻辑：某一行不包括...

------------------->$ git grep --not -e 'public'
a.txt:ab
a.txt:bc
a.txt:void
b.txt:void
b.txt:aaa
b.txt:bbb
c.txt:kkkk
c.txt:sfs
c.txt:l

2.4 组合逻辑：与或非的组合（为测试组合逻辑，又在库中新添加了d.txt文件）

------------------->$ git grep -e 'public' --and ( -e 'void' -e 'return' )
d.txt:public void int save
d.txt:public void string save
d.txt:public return a

------------------->$ git grep -e 'public' --and ( -e 'void' --or -e 'return' )
d.txt:public void int save
d.txt:public void string save
d.txt:public return a

------------------->$ git grep -e 'public' --and ( -e 'void' --and -e 'int' )
d.txt:public void int save

------------------->$ git grep -e 'public' --and ( --not -e 'int' )
a.txt:public
c.txt:public
c.txt:public
d.txt:public void string save
d.txt:public return a

2.5 全匹配：某一文件既包含...又包含...

------------------->$ git grep --all-match -e 'public' -e 'void'
a.txt:public
a.txt:void
d.txt:public void int save
d.txt:public void string save
d.txt:public return a

2.6 以上各个命令还可以加‘-n'、’-c‘、’--name-only‘、版本、文件等限制

2.7 查找某个字符串在何时添加

git log -S"string wanted to search" --oneline 
81fbf7e a commit