| ## Extending Cargo with Custom Commands |
| |
| Cargo is designed so you can extend it with new subcommands without having to |
| modify Cargo. If a binary in your `$PATH` is named `cargo-something`, you can |
| run it as if it was a Cargo subcommand by running `cargo something`. Custom |
| commands like this are also listed when you run `cargo --list`. Being able to |
| use `cargo install` to install extensions and then run them just like the |
| built-in Cargo tools is a super convenient benefit of Cargo’s design! |
| |
| ## Summary |
| |
| Sharing code with Cargo and [crates.io](https://crates.io/)<!-- ignore --> is |
| part of what makes the Rust ecosystem useful for many different tasks. Rust’s |
| standard library is small and stable, but crates are easy to share, use, and |
| improve on a timeline different from that of the language. Don’t be shy about |
| sharing code that’s useful to you on [crates.io](https://crates.io/)<!-- ignore |
| -->; it’s likely that it will be useful to someone else as well! |
