Does this error message look familar when you script/console?

$> script/console
Loading production environment (Rails 2.1.0)
/usr/lib/ruby/1.8/irb/completion.rb:10:in `require’: no such file to load — readline (LoadError)
from /usr/lib/ruby/1.8/irb/completion.rb:10
from /usr/lib/ruby/1.8/irb/init.rb:252:in `require’
from /usr/lib/ruby/1.8/irb/init.rb:252:in `load_modules’
from /usr/lib/ruby/1.8/irb/init.rb:250:in `each’
from /usr/lib/ruby/1.8/irb/init.rb:250:in `load_modules’
from /usr/lib/ruby/1.8/irb/init.rb:21:in `setup’
from /usr/lib/ruby/1.8/irb.rb:54:in `start’
from /usr/bin/irb:13
This happens when readline is somehow different than your current version of ruby or corrupted. The quick fix is [...]

source : http://ubuntuforums.org/showthread.php?t=789578
1. Backup (and then delete) your previous configuration files:
Code:
$ mkdir ~/pulse-backup && cp -r ~/.pulse ~/.asound* /etc/asound.conf /etc/pulse -t ~/pulse-backup/
$ rm -r ~/.pulse ~/.asound*
$ sudo rm /etc/asound.conf
2. Ensure you have the necessary PulseAudio libraries and configuration utilities installed:
Code:
$ sudo apt-get install libasound2-plugins padevchooser libsdl1.2debian-pulseaudio
3. Ensure the evil “libflashsupport” library is not installed:
Code:
$ [...]

export ARCHFLAGS=”-arch i386 -arch x86_64″ ;sudo gem install –no-rdoc –no-ri -v=2.7 mysql — –with-mysql-dir=/Applications/MAMP/Library/bin/mysql –with-mysql-config=/Applications/MAMP/Library/bin/mysql_config

Setup the Source Repository

deb http://za.archive.ubuntu.com/ubuntu/ intrepid universe
deb-src http://za.archive.ubuntu.com/ubuntu/ intrepid universe
deb http://za.archive.ubuntu.com/ubuntu/ intrepid-updates universe
deb-src http://za.archive.ubuntu.com/ubuntu/ intrepid-updates universe
deb http://za.archive.ubuntu.com/ubuntu/ intrepid multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ intrepid multiverse
deb http://za.archive.ubuntu.com/ubuntu/ intrepid-updates multiverse
deb-src http://za.archive.ubuntu.com/ubuntu/ intrepid-updates multiverse

To install NetBeans via the Ubuntu Package Manager, ensure that the correct repository is listed in the source listing file. NetBeans is found inf the universe repository and [...]

apt-get install libreadline5 libreadline5-dev
apt-get install libncurses5 libncurses5-dev

cd /usr/src/ruby-1.8.6-p368/ext/readline/
ruby extconf.rb
sudo make
sudo make install

done..

I was working on a Rails application recently that required the logs to be sent to remote log server. This blog is just a summary of the steps to get it working. I used Rails 2.0 and the development was done on Ubuntu.
The first thing was to get syslog-ng. Its more advanced than syslogd.
sudo apt-get [...]

If you have tried to install Mechanize or any gem that requires openssl on Ubuntu or Debian, you may have encountered the following error…
LoadError: no such file to load—openssl
despite the fact that you have installed openssl with “gem install libopenssl-ruby”.
Thanks to this thread, I found out that in order to install openssl, you have to [...]

You are attempting to push when you experience a conflict:
[ksedgwic@lap2 bonsai-wiki]$ git push
To ssh://ikiwiki@git.bonsai.com/~/public_git/bonsai-wiki.git
! [rejected] master -> master (non-fast forward)
error: failed to push some refs to ’ssh://ikiwiki@git.bonsai.com/~/public_git/bonsai-wiki.git’
First, see if the conflict can be automatically resolved:
[ksedgwic@lap2 bonsai-wiki]$ git pull
remote: Counting objects: 9, done.
remote: Compressing objects: 100% (5/5), done.
remote: [...]

http://www.tutorialspoint.com/ruby-on-rails/index.htm

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