xtetsuji

#!/bin/bash
set -eu

browser=open

default_gw=$( route -n get 0.0.0.0 | grep gateway | sed -e 's/.*: //' )

if [ "_${1:-}" = "_-w" ] ; then
    "$browser" "http://$default_gw/"
fi

xtetsuji

2^2 + 10^2 + 32^2 = 1128
2^2 + 32^2 + 10^2 = 1128
10^2 + 2^2 + 32^2 = 1128
10^2 + 32^2 + 2^2 = 1128
14^2 + 16^2 + 26^2 = 1128
14^2 + 26^2 + 16^2 = 1128
16^2 + 14^2 + 26^2 = 1128
16^2 + 26^2 + 14^2 = 1128
26^2 + 14^2 + 16^2 = 1128
26^2 + 16^2 + 14^2 = 1128

xtetsuji

#!/usr/bin/env perl 
use strict;
use warnings;

my $check_mail_domain = shift;

if ( !$check_mail_domain || $check_mail_domain =~ / / ) {
    die "1st argument is required as mail domain\n";
}

xtetsuji

#!/usr/bin/osascript -l JavaScript

function run(argv) {
    const music = Application("Music");
    for ( const file of argv ) {
        console.log(`add: "${file}"`);
        music.add(file);
    }
}

xtetsuji

function ordinally_replace_sample() {
  const content = getContent();
  let replaced  = content;
  replaced = replaced.replace(/&/g, "&");
  replaced = replaced.replace(/</g, "&lt;");
  replaced = replaced.replace(/>/g, "&gt;");
  replaced = replaced.replace(/"/g, "&quot;");
  replaced = replaced.replace(/'/g, "&apos;");
  console.log("ordinally: " + replaced);
}

xtetsuji

#!/usr/bin/env perl
# urlopen - open (macOS) URL from STDIN
# SYNOPSIS: 
#   tail url_include_log | urlopen
#   stdout-url-command   | urlopen
# OPTIONS:
#   urlopen [--pass-through|-p] : pass through STDOUT (default off)
#   urlopen [--verbose|-v] : outout opend URL (default off)
use v5.12;
use Getopt::Long qw(:config posix_default no_ignore_case bundling auto_help);

xtetsuji

#!/usr/bin/env perl
use v5.14;
use constant MAX_NEWTON_ITERATION_COUNT => 8;

print "平方根をニュートン法で求めます\n";
print "1より大きい自然数を入れて下さい: ";
my $input = <STDIN>;
chomp $input;
if ( !$input || $input <= 1 ) {
    die "1より大きい自然数ではありませんでした\n";

xtetsuji

#!/usr/bin/env perl
use strict;
use warnings;
use Data::Dumper;

my $header_string = <<'END_HEADER';
Delivered-To: xtetsuji@example.jp
Received: by 2002:ff68:12bc:0:0:0:0:0 with SMTP id 2f8a1000492ce44c1b7c;
        Fri, 8 Nov 2019 15:07:34 -0800 (PST)
X-Received: by 2002:a63:6581:: with SMTP id c451320e8476820844296b80587f9f3a;

xtetsuji

$ perl -e 'for my $digit (0x00..0xff) { my $byte = chr $digit; my $match = $byte =~ /^\s$/; printf "0x%x\t%s\n", $digit, $match ? "match" : "-"; }'
0x00	-
0x01	-
0x02	-
0x03	-
0x04	-
0x05	-
0x06	-
0x07	-
0x08	-

xtetsuji

#!/usr/bin/env perl

use strict;
use warnings;

my $str = "A " x 100;
my $i = 1;
$str =~ s/A/ $i++ /eg;
print "$str\n";