$ 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:externvoid*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,
如果你要显示行号, 你可以添加'-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:externvoid*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,
如果我们想只显示文件名, 我们可以使用'--name-onley'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
我们可以用'-c'选项,可以查看每个文件里有多少行匹配内容(line matches):
$>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
现在, 如果我们要查找git仓库里某个特定版本里的内容, 我们可以像下面一样在命令行末尾加上标签名(tag reference):
$ 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:staticinlinevoid*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
我可以看到"1.5.0版"和当前版本间一些区别: 在“1.5.0版"中, xmmap没有在wrapper.c中出现. 我们也可以组合一些搜索条件, 下面的命令就是查找我们在仓库的哪个地方定义了'SORT_DIRENT'.
$ git grep -e '#define'--and-e SORT_DIRENT builtin-fsck.c:#define SORT_DIRENT 0 builtin-fsck.c:#define SORT_DIRENT 1
我不但可以进行“与"(both)条件搜索操作，也可以进行"或"(either)条件搜索操作.
$ git grep --all-match -e '#define'-e SORT_DIRENT builtin-fsck.c:#define REACHABLE 0x0001 builtin-fsck.c:#define SEEN 0x0002 builtin-fsck.c:#define ERROR_OBJECT 01 builtin-fsck.c:#define ERROR_REACHABLE 02 builtin-fsck.c:#define SORT_DIRENT 0 builtin-fsck.c:#define DIRENT_SORT_HINT(de)0 builtin-fsck.c:#define SORT_DIRENT 1 builtin-fsck.c:#define DIRENT_SORT_HINT(de)((de)->d_ino) builtin-fsck.c:#define MAX_SHA1_ENTRIES (1024) builtin-fsck.c:if(SORT_DIRENT)
我们也可以查找出符合一个条件(term)且符合两个条件(terms)之一的文件行. 例如我们要找出名字中含有‘PATH'或是'MAX'的常量定义:
$ git grep -e '#define'--and \( -e PATH -e MAX \) abspath.c:#define MAXDEPTH 5 builtin-blame.c:#define MORE_THAN_ONE_PATH (1u<<13) builtin-blame.c:#define MAXSG 16 builtin-describe.c:#define MAX_TAGS (FLAG_BITS -1) builtin-fetch-pack.c:#define MAX_IN_VAIN 256 builtin-fsck.c:#define MAX_SHA1_ENTRIES (1024)
... 译者注: 就是"与"条件搜索和"或"条件搜索可以组合使用.
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