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That's a pretty good introduction. I've been using emacs for years, but this post reminds me that I've never gotten around to setting up a satisfactory project management system, so that I can grep and find files across the whole project.

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You should use Projectile: https://github.com/bbatsov/projectile . Projectile allows you to Grep a project under VCS easily.

And use Helm with it like this: http://tuhdo.github.io/helm-intro.html#sec-28

Projectile is neat, but you don't need anything fancy to grep and find across the project. I just have a single binding to switch to an eshell, and running rgrep or find commands automatically pops up a hyperlinked buffer containing results. Having a shell function to cd to the project root helps too.

Yeah, right now my workflow is just to use silver searcher in my (non-emacs) terminal which is always in a window right next to emacs. Eventually I'll take a few moments to integrate the workflow into emacs.

You can use Ag right inside Emacs with this package: https://github.com/Wilfred/ag.el

If you use Helm, there's helm-ag: https://github.com/syohex/emacs-helm-ag

Use MELPA and package manager to install the above packages: http://tuhdo.github.io/emacs-tutor3.html#sec-4-1

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