# HG changeset patch
# User nanaya <me@nanaya.pro>
# Date 1606236205 -32400
#      Wed Nov 25 01:43:25 2020 +0900
# Node ID bdc9eddf374389f862842d52e05808def5fe5ec8
# Parent  6ca63cec0879be4de538dcec095afe18bf2f40d1
[pwgen] rewrite in shell script

diff --git a/bin/pwgen b/bin/pwgen
--- a/bin/pwgen
+++ b/bin/pwgen
@@ -1,9 +1,11 @@
-#!/usr/bin/env ruby
+#!/bin/sh
 
-require 'securerandom'
+set -e
+set -u
 
-length = ARGV[0].to_i
-length = 12 if length <= 0
-5.times do |n|
-  puts "#{n}: #{SecureRandom.urlsafe_base64(length).slice(0, length)}"
-end
+_length="${1:-12}"
+
+for i in 1 2 3 4 5; do
+  printf "%s: " "$i"
+  openssl rand -base64 "$_length" | tr '/+' '-_' | cut -c "1-$_length"
+done