Macro cmd_lib::run_cmd

macro_rules! run_cmd {
    ($($cur:tt)*) => { ... };
}

run_cmd! --> CmdResult

#[macro_use]
use cmd_lib::run_cmd;

let name = "rust";
run_cmd!(echo $name);
run_cmd!(|name| echo "hello, $name");

// pipe commands are also supported
run_cmd!(du -ah . | sort -hr | head -n 10);

// or a group of commands
// if any command fails, just return Err(...)
let file = "/tmp/f";
run_cmd!{
    date;
    ls -l $file;
};