Unix for Poets

During learning a Natural Language Processing course I found great reading for unix users. It's book about how processing billon words.

Content:

1. Count words in a text

2. Sort a list of words in various ways

• ascii order
  
• dictionary order
  
• ‘‘rhyming’’ order
  3. Extract useful info from a dictionary 4. Compute ngram statistics
  5. Make a Concordance 
  

Link

Also I found cool resource about regular expression. Link