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extern crate memmap2;
use std::env;
use std::fs::File;
use std::io::{self, Write};
use memmap2::Mmap;
/// Output a file's contents to stdout. The file path must be provided as the first process
/// argument.
fn main() {
let path = env::args()
.nth(1)
.expect("supply a single path as the program argument");
let file = File::open(path).expect("failed to open the file");
let mmap = unsafe { Mmap::map(&file).expect("failed to map the file") };
io::stdout()
.write_all(&mmap[..])
.expect("failed to output the file contents");
}
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