## Installing Binaries from Crates.io with `cargo install`

The `cargo install` command allows you to install and use binary crates locally. This isn't intended to replace system packages; it's meant to be a convenient way for Rust developers to install tools that others have shared on crates.io. Only packages which have binary targets can be installed, and all binaries are installed into the installation root's bin folder. If you installed Rust using rustup.rs and don't have any custom configurations, this will be `$HOME/.cargo/bin`. Add that directory to your `$PATH` to be able to run programs you've gotten through `cargo install`.

For example, we mentioned in Chapter 12 that there's a Rust implementation of the `grep` tool for searching files called `ripgrep`. If we want to install `ripgrep`, we can run:

    $ cargo install ripgrep
    Updating registry `https://github.com/rust-lang/crates.io-index`
     Downloading ripgrep v0.3.2
     ...snip...
       Compiling ripgrep v0.3.2
        Finished release [optimized + debuginfo] target(s) in 97.91 secs
      Installing ~/.cargo/bin/rg

The last line of the output shows the location and the name of the installed binary, which in the case of `ripgrep` is named `rg`. As long as the installation directory is in our `$PATH` as mentioned above, we can then run `rg --help` and start using a faster, rustier tool for searching files!