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Unicode Character Reference

Unicode Character Reference
Just a quick reference to all those delicious unicode characters and how they render on the web‽‽

Web Development

Boosting Googles PageSpeed Module with TMPFS

Boosting Googles PageSpeed Module with TMPFSGoogle's mod_pagespeed speeds up your site and reduces page load time. This open-source Apache HTTP server module automatically applies web performance best practices to pages, and associated assets (CSS, JavaScript, images), all transparently like a Squid Proxy.

With TMPFS you can dramatically improve the speed of mod_pagespeed and the webpages served by it. TMPFS will store/serve the optimized PageSpeed output directly from RAM!

Hosting

Get Number of Running Proccesses with PHP

Apache Httpd Number ProcessesRecently I had to setup a script to curl 10k urls, but it could only do 500 requests at any one time. In order to work under that limit, I created a function that returns the number of currently running processes on the machine in an extremely fast and efficient way, thus allowing the curl_multi requests to queu themselves such as GNU xargs.

PHP

Help the Free Software Foundation


Become a member of the Free Software Foundation today to help us reach our goal of $450,000 by January 31st.


Net

Discover who’s tracking you online with Collusion

collusion firefox addonThe collusion add-on for Firefox is super-legit. Just navigate to any website normally, then just click the little collusion icon in the status bar and a full detailed report pops up in a new tab describing all the sites that the current site shared your data with (shared as in connected).

View the full introduction to Collusion on mozilla.org, or view my Firefox Add-on Collection: AskApache Web Development (Advanced)

Software

PDF.js

PDF.js Iconpdf.js is an HTML5 technology experiment that explores building a faithful and efficient Portable Document Format (PDF) renderer without native code assistance.

Javascript

RXVT Customization with ~/.Xresources

rxvt-unicode screenshot running tmuxAfter many years of using any and all terminal emulators out there, from xterm to the Gnome terminal, to KDE Konsole to xfce4-terminal, lxterminal, vte, yakuake, rote, roxterm, sakura, terminator, and putty I finally I settled in for the long-haul with rxvt (rxvt-unicode).
My BOX: Slim -> Ratpoison -> URxvt -> Tmux -> Bash

Linux

MySQL Performance Tuning Scripts and Know-How

MySQL Performance Tuning Scripts and Know-HowUnless you are a total linux-freak-guru like myself, and even if you are, it can be enormously challenging and somewhat overwhelming to locate and eliminate MySQL bottlenecks. While many DBAs focus on improving the performance of the queries themselves, this post will focus on the highest-impact items: MySQL Server Performance and OS Performance for MySQL. Specifically showing 4 awesome tools to auto-tune your MySQL and a few more tools just for monitoring!

MySQL

King Penguin Linux Notebook

King Penguin Linux Notebook The machine itself is super super ultra-thin, wafer thin, very cool looking. It's crazy light, I was amazed how slick it looked when it arrived.
Huge amount of open-source hardware/chipsets/etc.. The first time I went through the dmesg I was smiling. 2 USB 3.0 ports, and they actually work as promised, very very fast transfer speeds to my USB 3.0 external SSD. Incredible speed, boot time is the fastest I've ever seen. Starts at $720, mine was $1,800

Products

Alienware M18xR2 Review of Dells fastest Laptop

Alienware M18xR2 Review of Dells fastest LaptopClevo > Dell > Alienware. This is the best of the best. I've had mine for about a year now and have had 0 issues with it. It's fast, as in crazy unreal fast. It's not a huge server slice, but it acts like it. With 16GB of RAM, 8 cpus, SSD Raid, USB-3, and of course the graphics. Downside: about $3.5 - $6k

Products

Bash alternative to Reflector for Ranking Mirrors

Bash alternative to Reflector for Ranking MirrorsA pure bash alternative to the python reflector, using curl, xargs, and sort for ranking Arch Linux mirrors.

Nice and simple. Short and sweet.

Shell Scripting

Htaccess Rewrite for Redirecting Uppercase to Lowercase

Want to redirect all links with any uppercase characters to lowercase using pure mod_rewrite within an .htaccess file? Sure why not! OR how to use RewriteMap and mod_speling for those with access to httpd.conf

Htaccess

Separate favicons for the Frontend and Backend

Here's a nifty little idea I had that has some merit and is super easy. Separate favicons for separate areas of a site. Basically, I can't live without Firefox or Chrome and the way they use multiple tabs, having about 20-50 open at any one time.. But that makes it more difficult to find the right tab!

Separate favicons for the Frontend and Backend

WordPress

PHP fsockopen for FAST DNS lookups over UDP

While reading up on gethostbyaddr on PHP.net, I saw a nice idea for using fsockopen to connect over UDP port 53 to any Public DNS server, like Google DNS 8.8.8.8, and sending the reverse addr lookup in oh about 100 bytes, then getting the response in oh about 150 bytes! All in less than a second. This is how/why to read/write data directly to the wire! This would be extremely valuable for use in things like my online header tool because it's faster than any other method. As usual, I went a bit overboard optimizing it to be lean and fast.

PHP

Bash Script to Create index.html of Dir Listing

Bash Script to Create index.html of Dir ListingIf you use Apache to auto-generate directory index listings of files/dirs, and you have a large number of files and directories in the root directory and/or slow IO speed, then generating the index could take Apache over a minute!

Shell Scripting

THE Ultimate Htaccess

I discovered these tips and tricks mostly while working as a network security penetration specialist hired to find security holes in web hosting environments. That is when I started examining htaccess files in great detail and learned about the incredible untapped power of htaccess. The only avenue on shared-hosting was and is the .htaccess file, and holy freaking fiber-optics.. it's almost as powerful as httpd.conf itself

Htaccess

HTTP Status Codes

HTTP Status CodesThis is a big update from the last time I looked into this, when I enumerated 57 Status Codes that Apache 2.x was capable of handling. This list contains 83 Status Codes recognized by Apache. I compiled the latest 2.4.4 Apache in order to view the actual codes sent by a live server.. very cool. You can read about the newest HTTP Status Codes in RFC 6585.

Net

View all MySQL Variables for Pasting into my.cnf

View all MySQL Variables for Pasting into my.cnfThis is really useful for me because I work with dozens of different database servers. The first thing I do is run this command and paste it into the servers /etc/my.cnf file. That way I will always know the original value and it just makes life much easier.

$ mysql -NBe 'SHOW VARIABLES' |sed 's,\t,^=,'|column -ts^|tr "\n" '@'|eval $(echo "sed '" "s,@\("{a..z}"\),\n\n\1,;" "'")|tr '@' "\n"|sed 's,^,# ,g'

MySQL

Fix Linux Users Home Permissions with a Cron Job

As a security nut myself, and also a Linux admin, one of my biggest pet peeves is when I've taken the time and care to segment all the users on a server into separate home directories, and then some developer comes along, logs in as root, and changes the ownership of files. Other things can cause this, like Apache, PHP, Mutt, etc.. So I've always used a cron job that executes daily (and on demand) which automatically fixes all the permissions back to what they should be.

Linux

Getting the Mimetype of an Image with PHP

This is awesome. I was so fed up with trying to find a fail-proof, cross-platform way to find the mime type of an image using PHP that I wrote a quick function that utilizes the same technology as the exif_imagetype, getimagesize, and finfo functions do. Ahh the joys of low-level.

PHP

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Twitter

  • @askapache · Apr 22
    Within our small sphere of the universe we can look at our past, but only our future is within our control
  • @askapache · Apr 16
    RT @commandlinefu:  t.co/htRbYF8SFf  - Print ASCII Character Chart (AskApache) #echo #column #ascii #for #octal #askapache #chart
  • @askapache · Apr 11
    Angel headed hipsters burning for the ancient heavenly connection to the starry dynamo in the machinery of the night - Ginsberg
  • @askapache · Apr 11
    If you haven't experienced a hacker war on a free shell network like SDF, you haven't lived!
  • @askapache · Apr 10
    @kovshenin @wpekadotcom @CloudFlare Maybe it's an April fools joke that finally propagated
  • @askapache · Apr 10
    @kovshenin @wpekadotcom @CloudFlare wait this is a joke right?
  • ZERO DAY - read before Trojan horse  t.co/pPMLGDJv8P 
  • Trojan Horse, a novel!  t.co/Hf8EtYaZVa 
  • The Hacker Playbook - very nice high level overview of attacks  t.co/lHwNVWi61u 
  • Clean Code - A Handbook of Agile Software Craftsmanship  t.co/hnJX0x1qIc 
  • Secrets of the JavaScript Ninja - By my absolute favorite JS hacker John Resig!  t.co/tZ42ljmcCl 
  • Hacking Exposed 7: Network Security Secrets & SolutionsMy all time favorite, basic but thorough and accurate.  t.co/jycW0RDVtZ 
  • Empty words will be no surrogate for cold resolve. Pain is nothing.  t.co/qXjpRxbjCw 
  • REVERSING: Secrets of Reverse Engineering  t.co/GaWo29lWWG 
  • NEUROMANCER  t.co/3OoknUcb5Z 
  • "The Shockwave Rider", by John Brunner (1975 hacker sci-fi)  t.co/ZW56HVUefW 
  • The Rootkit ARSENAL - Escape and Evasion in the Dark Corners of the System  t.co/1FzX6bHgsQ 
  • "We Are Anonymous - Inside the Hacker World of LulzSec, Anonymous, and the Global Cyber Insurgency" better be good!  t.co/GL0cFNiUOq 
  • THE IDEA FACTORY Bell Labs  t.co/FyVhgNwwT5 
  • The Datacenter as a Computer -- Urs Holzle  t.co/M5WIYs1OVg 

Live Free or Die

The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect. -Tim Berners-Lee


A strong free software movement focused on the principled issues of software freedom and a strong FSF in particular will determine what freedoms the next generation of computer users enjoy. At stake is no less than the next generation's autonomy. -Benjamin Mako Hill

Hacking and Hackers

The use of "hacker" to mean "security breaker" is a confusion on the part of the mass media. We hackers refuse to recognize that meaning, and continue using the word to mean someone who loves to program, someone who enjoys playful cleverness, or the combination of the two. See my article, On Hacking.
-- Richard M. Stallman






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It's very simple - you read the protocol and write the code. -Bill Joy

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