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Update the explanation when using grep

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Igor Irianto 2021-02-02 16:28:19 -08:00
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ch03_searching_files.md
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@ -149,10 +149,10 @@ You may notice that running internal grep (`:vim`) can get slow if you have a la
Let's talk about external grep. By default, it uses `grep` terminal command. To search for "lunch" inside a ruby file inside `app/controllers/` directory, you can do this:
```
:grep "lunch" app/controllers/**/*.rb
:grep -R "lunch" app/controllers/
```
Note that instead of using `/pattern/`, it follows the terminal grep syntax `"pattern"`. Just like `:vim`, `:grep` accepts `*` and `**` wildcards. It also displays all matches using `quickfix`.
Note that instead of using `/pattern/`, it follows the terminal grep syntax `"pattern"`. It also displays all matches using `quickfix`.
Vim uses `grepprg` variable to determine which external program to run when running `:grep` so you don't have to always use the terminal `grep` command. Later I will show you how to change default the grep external program.