My Own Percept» linux

`gem_original_require’: no such file to load — zlib (LoadError)

Marouan OMEZZINE — Sat, 28 Jan 2012 20:21:30 +0000

You may have faced a such a error, when trying to execute gem list :

//lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- zlib (LoadError)
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from //lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:1
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from //lib/ruby/site_ruby/1.8/rubygems/commands/query_command.rb:3
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from //lib/ruby/site_ruby/1.8/rubygems/commands/list_command.rb:2
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
	from //lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
	from //lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:167:in `load_and_instantiate'
	from //lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:88:in `[]'
	from //lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:144:in `find_command'
	from //lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:131:in `process_args'
	from //lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:102:in `run'
	from //lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:58:in `run'
	from /bin/gem:21

To solve this issue, move to the zlib/ folder, it should be something like this /usr/src/ruby-1.8.6-pXXX/ext/zlib/

execute the extconf.rb :

1	root@xen1:/usr/src/ruby-1.8.6-p398/ext/zlib# ruby extconf.rb

If every things are ok, you should see:

checking for deflateReset() in -lz... yes
checking for zlib.h... yes
checking for kind of operating system... Unix
creating Makefile

compile and deploy zlib by runnning both commands:

1 2	sudo make sudo make install

Make sure gem command is woking:

gem list

You should see:

1	* LOCAL GEMS *

How to recursively delete .svn directories

Marouan OMEZZINE — Wed, 20 Apr 2011 15:19:59 +0000

Just move to the directory where you want to delete, recursively, the .svn directories and type the folowing line:

rm -rf `find  . -type d -name .svn`

Creating init.d script for Juggernaut

Marouan OMEZZINE — Sat, 24 Jul 2010 10:26:04 +0000

The Juggernaut plugin for Ruby on Rails aims to revolutionize your Rails app by letting the server initiate a connection and push data to the client. In other words your app can have a real time connection to the server with the advantage of instant updates. Although the obvious use of this is for chat, the most exciting prospect is collaborative cms and wikis.

#!/bin/sh -e 
APP_PATH=/home/zooz.com/current 
JUGGERNAUT_CONFIG="$APP_PATH/juggernaut.yml" 
JUGGERNAUT_PID="$APP_PATH/tmp/pids/juggernaut.pid" 
JUGGERNAUT_LOG="$APP_PATH/log/juggernaut.log" 
RAILS_ENV=production 
case $1 in 
        start) 
                echo "Starting Juggernaut ..." 
                juggernaut -d -c $JUGGERNAUT_CONFIG --pid $JUGGERNAUT_PID --log $JUGGERNAUT_LOG 
        ;; 
        stop) 
                echo "Stopping Juggernaut ..." 
                juggernaut -k * -c $JUGGERNAUT_CONFIG --pid $JUGGERNAUT_PID --log $JUGGERNAUT_LOG 
        ;; 
        restart) 
                echo "Juggernaut restart ..." 
                echo "Stopping Juggernaut ..." 
                juggernaut -k * -c $JUGGERNAUT_CONFIG --pid $JUGGERNAUT_PID --log $JUGGERNAUT_LOG 
                echo "Starting Juggernaut ..." 
                juggernaut -d -c $JUGGERNAUT_CONFIG --pid $JUGGERNAUT_PID --log $JUGGERNAUT_LOG 
        ;; 
esac

[Novice] Linux File Structure

Marouan OMEZZINE — Sun, 13 Sep 2009 15:46:59 +0000

Linux File Structure

You may find it useful :