> For the complete documentation index, see [llms.txt](https://ploegert.gitbook.io/til/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ploegert.gitbook.io/til/os/unix/search-query/grep-for-files-with-multiple-matches.md).

# Grep For Files With Multiple Matches

The `grep` utility is a great way to find files that contain a certain pattern:

```bash
$ grep -r ".class-name" src/css/
```

This will recursively look through all the files in your css directory to find matches of `.class-name`.

Often times these kinds of searches can turn up too many results and you'll want to pare it back by providing some additional context.

For instance, we may only want results where `@media only screen` also appears, but on a different line. To do this, we need to chain a series of `greps` together.

```bash
$ grep -rl "@media only screen" src/css |
    xargs grep -l ".class-name"
```

This will produce a list of filenames (hence the `-l` flag) that contain both a line with `@media only screen` and a line with `.class-name`.

If you need to, chain more `grep` commands on to narrow things down even farther.

See `man grep` for more details.