@ -1143,7 +1143,6 @@ See also [TeX](#tex)
* [Ad Hoc Data Analysis From The Unix Command Line ](http://en.wikibooks.org/wiki/Ad_Hoc_Data_Analysis_From_The_Unix_Command_Line )
* [Advanced Linux Programming ](http://www.advancedlinuxprogramming.com/ )
* [Automated Linux From Scratch ](http://www.linuxfromscratch.org/alfs/download.html )
* [Cross Linux From Scratch ](http://trac.cross-lfs.org/wiki/download#CurrentStable )
* [Getting Started with Ubuntu ](http://ubuntu-manual.org/ )
* [GNU Autoconf, Automake and Libtool ](http://sources.redhat.com/autobook/download.html )
* [GTK+/Gnome Application Development ](http://www.linuxtopia.org/online_books/gui_toolkit_guides/gtk+_gnome_application_development/index.html )
@ -1318,8 +1317,6 @@ See also [TeX](#tex)
### Oracle PL/SQL
* [PL/SQL Language Reference ](http://download.oracle.com/docs/cd/E11882_01/appdev.112/e17126/toc.htm )
* [PL/SQL Packages and Types Reference ](http://download.oracle.com/docs/cd/E11882_01/appdev.112/e16760/toc.htm )
### Oracle Server
@ -1570,11 +1567,7 @@ See also [TeX](#tex)
### Ruby
* [Ruby in Twenty Minutes ](https://www.ruby-lang.org/en/documentation/quickstart/ )
* [Programming Ruby ](http://www.ruby-doc.org/docs/ProgrammingRuby/ )
* [Ruby Learning ](http://rubylearning.com/ )
* [A community-driven Ruby style guide ](https://github.com/bbatsov/ruby-style-guide )
* [Ruby User's Guide ](http://www.rubyist.net/~slagell/ruby/ )
* [CodeCademy Ruby ](http://www.codecademy.com/tracks/ruby )
* [Developing Games With Ruby ](https://leanpub.com/developing-games-with-ruby/read )
* [I Love Ruby ](http://goo.gl/1qrMUN )
@ -1583,13 +1576,16 @@ See also [TeX](#tex)
* [Learn to Program, by Chris Pine ](http://pine.fm/LearnToProgram/ )
* [Mr. Neighborly's Humble Little Ruby Book ](http://www.humblelittlerubybook.com/ )
* [Practicing Ruby ](https://github.com/elm-city-craftworks/practicing-ruby-manuscripts )
* [Programming Ruby ](http://www.ruby-doc.org/docs/ProgrammingRuby/ )
* [Read Ruby ](http://readruby.io/ )
* [Ruby Essentials ](http://www.techotopia.com/index.php/Ruby_Essentials )
* [Ruby Hacking Guide ](http://ruby-hacking-guide.github.io/ )
* [Ruby in Twenty Minutes ](https://www.ruby-lang.org/en/documentation/quickstart/ )
* [Ruby Koans ](http://www.rubykoans.com/ )
* [Ruby Learning ](http://rubylearning.com/ )
* [Ruby Programming ](http://www.linuxtopia.org/online_books/programming_books/ruby_tutorial/ )
* [Ruby User's Guide ](http://www.rubyist.net/~slagell/ruby/ )
* [The Bastards Book of Ruby ](http://ruby.bastardsbook.com/ )
* [The Little Book Of Ruby ](http://www.sapphiresteel.com/ruby-programming/The-Little-Book-Of-Ruby.html )
* [The Unofficial Ruby Usage Guide (at Google) ](http://www.caliban.org/ruby/rubyguide.shtml ) - Ian Macdonald
* [Why's (Poignant) Guide to Ruby ](http://mislav.uniqpath.com/poignant-guide/ ) ([mirror](http://www.scribd.com/doc/2236084/Whys-Poignant-Guide-to-Ruby))
@ -1795,7 +1791,6 @@ See also [LaTeX](#latex)
### Vim
* [A Byte of Vim ](http://www.swaroopch.com/notes/vim/ )
* [A guide to getting started with VIM ](http://www.integralist.co.uk/posts/a-guide-to-getting-started-with-vim/ )
* [Learn Vim Progressively ](http://yannesposito.com/Scratch/en/blog/Learn-Vim-Progressively/ )
* [Learn Vimscript the Hard Way ](http://learnvimscriptthehardway.stevelosh.com/ )
* [Use Vim Like A Pro ](https://leanpub.com/VimLikeAPro ) *(Leanpub, by Tim Ottinger)*