> For the complete documentation index, see [llms.txt](https://til.devjugal.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://til.devjugal.com/linux/grep/grep-case-insensitive-search.md).

# Grep Case Insensitive Search

By default `grep` is case sensitive. Which simply means "function" and "Function" are two distinct words for it, we can overcome this by passing `-i` argument to it.

### Example

```bash
echo "Hey There" | grep -i "hey there"
Hey There
```

Here, even if we're searching for lowered case "hey", we still get "Hey There".

***Source:*** [***Linuxize***](https://linuxize.com/post/how-to-use-grep-command-to-search-files-in-linux/#case-insensitive-search)