Tag Archives: proxy

OpenSSH commands

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  • Here is the syntax that makes scp support spaces (source):
    scp foo.com:"/home/fubar/some\ folder/file.txt" ./
  • Copy a bunch of files to a remote server (or how to use find with scp):
    find /var/log/ -iname "*.log" -type f | xargs -i scp '{}' kevin@myserver:/media/backup/logs/
  • Redirect local 8081 port to proxy.company.com:8080 via a SSH tunnel passing through the authorized-server.company.com machine:
    ssh -T -N -C -L 8081:proxy.company.com:8080 kevin@authorized-server.company.com
  • Use rsync over different SSH port (source):
    rsync --progress -vrae 'ssh -p 8022' /home/user/docs/ bill@server:/home/user/docs/

How-to add proxy support to Feedalizer ruby library

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Here is a little code snippet that monkey-patch Feedalizer to let it grab web content through a HTTP proxy:

# HTTP proxy settings
HTTP_PROXY_HOST = "123.456.78.90"
HTTP_PROXY_PORT = 8080

# Calculate proxy URL
HTTP_PROXY_URL = "http://#{HTTP_PROXY_HOST}:#{HTTP_PROXY_PORT}"

# Monkey patch feedalizer to support page grabbing through a proxy
require 'feedalizer'
class Feedalizer
  # Backup original grab_page method
  alias_method :grab_page_orig, :grab_page
  # Define new grab_page() method with proxy support
  def grab_page(url)
    open(url, :proxy => HTTP_PROXY_URL) { |io| Hpricot(io) }
  end
end

This fix, written for a Ruby on Rails-based project, lay in the environment.rb file, but I wonder if this is the right place and the right way of doing it… Anyway, it works for me ! :)

Update: A post from Matthew Higgins’ blog that answer my question above has just shown up in my feed aggregator. What’s he telling us ? That I’m a naughty programmer :

Previous to 2.0, naughty developers pasted code at the bottom of environment.rb, and the config/initializer folder was a welcome convention to help organize this madness.

For your instance, the code in this post is extracted from an “old” (prior to RoR 2.0) project, thus explaining my naughtyness… ;)