utilz 0.9.0

utilz provides miscellaneous utilities too small for their own crates.
Documentation 
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//! Call the child command specified while holding a lock on the specified file.

use std::env::args;
use std::process::Command;

use utilz::lockfile::Lockfile;

fn main() {
    let args: Vec<String> = args().collect();
    // One arg for with-lock, one arg for lockfile.
    if args.len() < 2 {
        std::process::exit(-1);
    }
    let _lockfile = Lockfile::wait(args[1].clone());
    // Another arg for child.
    if args.len() < 3 {
        std::process::exit(-1);
    }
    // Return child exit status.
    let mut child = Command::new(args[2].clone())
        .args(&args[3..])
        .spawn()
        .expect("exec failed");
    let exit_status = child.wait().expect("wait failed");
    std::process::exit(exit_status.code().unwrap_or(-1));
}