本文翻译自：grep, but only certain file extensions
I am working on writing some scripts to grep certain directories, but these directories contain all sorts of file types. 我正在编写一些脚本来grep某些目录，但这些目录包含各种文件类型。
I want to grep just .h and .cpp for now, but maybe a few others in the future. 我想grep只是.h和.cpp现在，但也许其他几个人的未来。
So far I have: 到目前为止，我有：
{ grep -r -i CP_Image ~/path1/;
grep -r -i CP_Image ~/path2/;
grep -r -i CP_Image ~/path3/;
grep -r -i CP_Image ~/path4/;
grep -r -i CP_Image ~/path5/;}
| mailx -s GREP [email protected]
Can anyone show me how I would now add just the specific file extensions? 任何人都可以告诉我如何添加特定的文件扩展名？
#1楼
参考：https://stackoom.com/question/qWE5/grep-但只有特定的文件扩展名
#2楼
怎么样：
find . -name '*.h' -o -name '*.cpp' -exec grep "CP_Image" {} \; -print
#3楼
Just use the --include parameter, like this: 只需使用--include参数，如下所示：
grep -r -i --include \*.h --include \*.cpp CP_Image ~/path[12345] | mailx -s GREP [email protected]
that should do what you want. 应该做你想要的。
Syntax notes: 语法说明：
-
-r- search recursively-r- 递归搜索 -
-i- case- insensitive search-i- 不区分大小写的搜索 -
--include=\\*.${file_extension}- search files that match the extension(s) or file pattern only--include=\\*.${file_extension}- 仅搜索与扩展名或文件模式匹配的文件
#4楼
Should write "-exec grep " for each "-o -name " 应该为每个“-o -name”写“-exec grep”
find . -name '*.h' -exec grep -Hn "CP_Image" {} \; -o -name '*.cpp' -exec grep -Hn "CP_Image" {} \;
Or group them by ( ) 或者按（）分组
find . \( -name '*.h' -o -name '*.cpp' \) -exec grep -Hn "CP_Image" {} \;
option '-Hn' show the file name and line. 选项'-Hn'显示文件名和行。
#5楼
I am aware this question is a bit dated, but I would like to share the method I normally use to find .c and .h files: 我知道这个问题有点过时，但我想分享我通常用来查找.c和.h文件的方法：
tree -if | grep \\.[ch]\\b | xargs -n 1 grep -H "#include"
or if you need the line number as well: 或者如果您还需要行号：
tree -if | grep \\.[ch]\\b | xargs -n 1 grep -nH "#include"
#6楼
grep -rnw "some thing to grep" --include=*.{module,inc,php,js,css,html,htm} ./
