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Erik Behrends behrends

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mislav /
Last active Dec 22, 2018
Find "*.log" files in your home dir, sort them by fattest-first, and calculate the size of them all together.
find ~ -name '*.log' -print0 | xargs -0 -L1 stat -f'%z %N' | sort -rn | tee fat-logfiles.txt | head
awk '{ total += $1 } END { printf "total: %5.2f MiB\n", total/1024/1024 }' < fat-logfiles.txt

This allows you to use the following video streaming services outside of the US from your Mac without having to use a proxy or VPN, so no big bandwidth issues:

  • Hulu / HuluPlus
  • CBS
  • ABC
  • MTV
  • theWB
  • CW TV
  • Crackle
  • NBC
sj26 /
Created May 5, 2012 — forked from burke/
ruby-1.9.3-p194 cumulative performance patch.

Patched ruby 1.9.3-p194 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p194 with patches for boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84). It also includes the new backported GC from ruby-trunk.

Huge thanks to funny-falcon for the performance patches.

wycats / personality.rb
Created Apr 12, 2012
More technical details about the discussion at last nights meetup
View personality.rb
# Just wanted to clarify my points at the meetup last night.
# There were two different issues intertwined:
# (1) Whether to use extend or "include as extend"
# (2) When using "include as extend", what is the simplest way to achieve the goal?
# My personal opinion is that the answer to (1) is "extend", not "include as extend", but that
# is just my personal opinion. My answer to (2) is a more empirical question.
# Using the "extend" approach. Again, I personally prefer the simplicity of this approach, but
bokmann / no_such_thing.rb
Created Feb 23, 2012
The code of the talk from my Feb 22nd Arlington Ruby talk 'There is No Such Thing as Metaprogramming'.
View no_such_thing.rb
# This is the code from my 'There is No Such Thing as Metaprogramming' talk,
# which premiered at the Arlington, VA Ruby Users Group on Feb 22nd.
# Without the deliver and walk-through to the solution below this example
# will be missing quite an important bit of content (mainly the tracking of
# 'self' while developing the solution, but it still a useful read.
# Here is the Toddler with no metajuju. Note that the developer, as well as
# the code, is completely unuaware of the interpreter. A developer with a
# background in compiled languages would be comfortable looking at this.
burke /
Created Jan 27, 2012 — forked from funny-falcon/cumulative_performance.patch
ruby-1.9.3-p327 cumulative performance patch for rbenv

ruby-1.9.3-p327 cumulative performance patch for rbenv

This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.


You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.

View test.rb
require 'thread'
require 'json'
require 'net/http'
require 'uri'
require 'betabrite'
require 'psych'
require 'usb'
class StreamClient
def initialize user, pass
behrends / gist:1032218
Created Jun 17, 2011 — forked from dhh/gist:1014971
Use concerns to keep your models manageable
View gist:1032218
# autoload concerns
module YourApp
class Application < Rails::Application
config.autoload_paths += %W(
anonymous / tail-recursive.rb
Created Jul 9, 2010
notes on Ruby Tail Call Optimization
View tail-recursive.rb
# First, I suppose you have ruby 1.9.1 or 1.9.2
# Open irb. Execute this:
# RubyVM::InstructionSequence.compile_option = { tailcall_optimization: true, trace_instruction: false }
# Note, RubyVM::InstructionSequence.compile_option() doesn't have item :trace_instruction, still, you need to specify it. WTF?
# Also, it doesn't work if you just put it to the script. Don't know why yet. Tell me (@rofh) if you know.
# Then open the file:
# require "./tail-recursive"
# Then execute function:
# fact(30000)
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