Roger's woze

for reference:
sudo mount -o remount,size=7G /dev/shm

there’s a firefox extension that will do it.
download/install it: https://addons.mozilla.org/en-US/firefox/addon/2708
then highlight the ones you want to toggle
then right click and it shows up on the menu.
phew!

This useful for adding your planetlab slice to all nodes, for example.

using gnuplot ! [gnuplot gem]
straight from the gnuplot candlesticks demo [demo/candlesticks.dem]

rdp@rdp-vm:~/Downloads/gnuplot-4.2.5/demo$ cat test.rb
# 1	1.5	2 	2.4	4	6.
# 2	1.5	3 	3.5	4	5.5
# 3	4.5	5 	5.5	6	6.5
a = [1,2,3]
b = [1.5, 1.5, 4.5]
c = [2,3,5]
d = [2.4, 3.5, 5.5]
e = [4,4,6]
f = [6,5.5, 6.5]
require 'rubygems'
require 'gnuplot'
Gnuplot.open do |gp|
  Gnuplot::Plot.new( gp ) do |plot|

    plot.title  "Example"
    plot.ylabel "x"
    plot.xlabel "x^2"
    plot.xrange "[0:11]"
    plot.yrange "[0:10]"

    plot.data << Gnuplot::DataSet.new( [a,b,c,d,e,f] ) do |ds|
      ds.using = "1:3:2:6:5"
      ds.with = "candlesticks lt 3 lw 2 title 'Quartiles' whiskerbars"
      #ds.notitle
    end

    plot.data << Gnuplot::DataSet.new( [a,b,c,d,e,f] ) do |ds|
      ds.using = "1:4:4:4:4"
      ds.with = "candlesticks lt -1 lw 2"
      ds.notitle
    end

  end
end

I’d recommend plotting them as candlesticks

http://gnuplot.sourceforge.net/demo_4.3/candlesticks.html

??

what you want for buffered binary incoming file data in java is “BufferedInputStream”

ref:

http://java.sun.com/j2se/1.4.2/docs/api/java/io/BufferedInputStream.html

reading from a tape, then again, resulted in

irb(main):010:0> b = File.new ‘/dev/nst0′, ‘r’

Errno::EBUSY: Device or resource busy – /dev/nst0

from (irb):10:in `initialize’

from (irb):10:in `new’

from (irb):10

from :0

fix:

close the first handle [though it's already past EOF, apparently it needs a local close, too]

irb(main):011:0> a.close

=> nil

note you’ll want to read in chunks of 64*1024, even if it doesn’t actually return you chunks of that size, for some odd reason

git pull

Permission denied (publickey).

fatal: The remote end hung up unexpectedly

meant do:

$ exec ssh-agent bash

$  ssh-add ~/.ssh/id_rsa

ref:

http://blog.stonean.com/2008/04/17/github-and-public-key/

http://www.cs.indiana.edu/csg/FAQ/Security/openssh.html

possibly caused by too restrictive of firewalls [?]

from rails’ active support:

Array#split

http://weblog.rubyonrails.org/2006/11/26/1-2-new-in-activesupport

[1,2,3,4,5].split( 2)

=> [1,2], [3,4], [5]

I think once upon a time you did it like

rdoc some_files FILES=README.txt

but now it’s

rdoc README.txt some_files

[?]

This appears to break gem rdocs

gem rdocs need to specify this via

s.rdoc_options = ["--title", "EventMachine", "--main", "README", "--line-numbers"]

and

s.extra_rdoc_files = ["README", "RELEASE_NOTES", "COPYING", "GNU", "LEGAL", "TODO"]

see eventmachine-win32′s gemspec for an example

Just posted an announcement about my new site that has the rdocs for all gems–check it!

http://programming-gone-awry.blogspot.com/2009/06/rdocs-for-all-gems-from-rubyforge.html