# cargo-update [](https://travis-ci.org/nabijaczleweli/cargo-update) [](https://ci.appveyor.com/project/nabijaczleweli/cargo-update/branch/master) [](LICENSE) [](https://crates.io/crates/cargo-update)
A [`cargo` subcommand](https://github.com/rust-lang/cargo/wiki/Third-party-cargo-subcommands) for checking and applying updates to installed executables
## [Documentation](https://cdn.rawgit.com/nabijaczleweli/cargo-update/doc/cargo_update/index.html)
## [Manpage](https://cdn.rawgit.com/nabijaczleweli/cargo-update/man/cargo-install-update.1.html)
### Installation
Firstly, ensure you have [CMake](https://cmake.org), be it from your package manager, or from the [download page](https://cmake.org/download).
Then proceed as usual:
```shell
cargo install cargo-update
```
If that doesn't work and you're on Mac, [re-try with `PKG_CONFIG_PATH=/usr/local/opt/openssl/lib/pkgconfig`](https://github.com/alexcrichton/git2-rs/issues/257). If it still doesn't work, [slam open an issue](https://github.com/nabijaczleweli/cargo-update/issues) or [comment on one of the existing relevant ones](https://github.com/nabijaczleweli/cargo-update/issues?q=is%3Aissue+is%3Aopen+label%3Aexternal).
### Usage
`cargo install-update -a` - check for newer versions and update all installed packages.
`cargo install-update crate1 crate2 ...` - check for newer versions and update selected packages, will not install new packages.
For more information and examples see the [manpage](https://cdn.rawgit.com/nabijaczleweli/cargo-update/man/cargo-install-update.1.html).
#### Self-update
`cargo-update` will update itself seamlessly on Linux and Windows.
On Windows the following strategy is applied:
* Check for old versions, remove them
* Add the current version to the current executable's extension
* Create an empty file in place of the just-renamed file (this way `cargo install` will "replace" it and not duplicate the entry in `.crates.toml`)