logarytm

# Backup
# Usage:
#   backup foo bar   will make a backup of foo and bar (foo.2014-03….bak)
#   backup --rm foo  will make a backup of foo and then delete the original file
#                    (useful if you, for example, rewrite a configuration file)
# Attention:
#   This is not meant to be a substitute for VCS, or full backups. This is useful
#   while editing a sensitive resource such as a configuration file, to have a
#   fallback copy to return to.
backup()

logarytm

#!/bin/bash

status()
{
    xset -q | grep 'Monitor is ' | awk '{print $3}'
}

on()
{
    xset dpms force on

logarytm

/**
 * Regular expressions of the delimiters.
 * @type {Array<string>}
 */
var DELIMS = ['%', '%'];

/**
 * Replaces all occurences of {<key>} with parameters[key]. When an
 * appropriate property of parameters is not found, omits the substitution.
 *

logarytm

'use strict';

function Node(value, dependencies) {
  dependencies = (dependencies || []);
  this.value = this.valueOf = this.toString = () => value;
  this.dependencies = () => dependencies;
  this.standalone = () => dependencies.length === 0;
  this.equals = node => value === node.value();
}

logarytm

javascript:Array.prototype.forEach.call(document.querySelectorAll(".list"),function(e){var t=0,r=0;var l=/(\d+?)\/(\d+?)/;var a=e.querySelector(".list-header");Array.prototype.forEach.call(e.querySelectorAll('.badge[title="Checklist items"] .badge-text'),function(e){var a=l.exec(e.textContent);if(a){t+=parseInt(a[2]);r+=parseInt(a[1])}});var o=a.querySelector(".completness")||document.createElement("span");if(t>0){o.textContent=r+"/"+t+" ("+Math.round(r*100/t)+"%)"}o.className="completness";o.style.opacity=.75;o.style.float="right";a.insertBefore(o,a.querySelector(".list-header-menu-icon"))});

logarytm

<?php

$config = ...;
$input = file_get_contents('php://stdin');
$output = $input;
$opening = '<%';
$closing = '%>';

for ($offset = strpos($output, $opening); $offset !== false; $offset = strpos($output, $opening)) {
    $endOffset = strpos($output, $closing, $offset);

logarytm

#!/usr/bin/env bash
# Configuration
cache_file=$HOME/.updates

# function to check updates, must work without root privileges and print
# the number of updates to stdout.
function update_count {
  checkupdates | wc -l; return $?
}

logarytm

Linux

Drop I/O caches:

echo 3 | sudo tee /proc/sys/vm/drop_caches

Use Intel syntax with objdump -d:

logarytm

import datetime
import time

class stopwatch(object):
  def __init__(self, jobname):
    self.jobname = jobname

  def __enter__(self):
    self.starttime = (datetime.datetime.utcnow() - datetime.datetime(1970, 1, 1)).total_seconds()

logarytm

#!/bin/bash

email=overlord@localhost
free_threshold=20
next_reminder=$((60*60*24*3))
disks=(/dev/sda1 ...)

for disk in ${disks[*]}; do
  total=$(df $disk -P | tail -n 1 | awk '{print $2}')
  free=$(df $disk -P | tail -n 1 | awk '{print $4}')