xshell: Making Rust a Better Bash

xshell provides a set of cross-platform utilities for writing cross-platform and ergonomic "bash" scripts.

Example

```rust //! Clones a git repository and publishes it to crates.io. use xshell::{cmd, Shell};

fn main() -> anyhow::Result<()> { let sh = Shell::new()?;

let user = "matklad";
let repo = "xshell";
cmd!(sh, "git clone https://github.com/{user}/{repo}.git").run()?;
sh.change_dir(repo);

let test_args = ["-Zunstable-options", "--report-time"];
cmd!(sh, "cargo test -- {test_args...}").run()?;

let manifest = sh.read_file("Cargo.toml")?;
let version = manifest
    .split_once("version = \"")
    .and_then(|it| it.1.split_once('\"'))
    .map(|it| it.0)
    .ok_or_else(|| anyhow::format_err!("can't find version field in the manifest"))?;

cmd!(sh, "git tag {version}").run()?;

let dry_run = if sh.var("CI").is_ok() { None } else { Some("--dry-run") };
cmd!(sh, "cargo publish {dry_run...}").run()?;

Ok(())

} ```

See the docs for more.