Being Ridiculed for My Open Source Project (2013)(harthur.wordpress.com)

  use aho_corasick::AhoCorasick;
  use std::fs::File;
  use std::io::BufReader;
  fn main() {
    let args = std::env::args().collect::<Vec<_>>();
    if args.len() != 3 {
        eprintln!("Usage: ./count_occurances 'pattern' <filename>");
        return;
    }
    let f = File::open(&args[2]).expect("Error opening input file");
    let reader = BufReader::new(f);
    let patterns = &[&args[1]];
    let ac = AhoCorasick::new(patterns);
    let count = ac.stream_find_iter(reader).count();
    println!("{}", count);
  }

  They are affected by physical proximity, eye contact, body language,
  tone of voice, even smell.

  They lack the courage to be hostile to strangers who may possibly
  retaliate with physical force.

  Deeply entrenched socialisation and group norms operate mostly
  on the inter-personal, face-to-face level.

  rename 's/foo/bar/g' *

  find . -name '*.txt' -print0 | xargs -0 rename 's/foo/bar/g'