From: Pen Ttt <myocean135@...>
Date: 2010-04-08T19:27:27+09:00
Subject: how to use ri in my computer?

pt@pt-laptop:~$ ri Integer#times
/usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:384:in `initialize':
Permission denied - /home/pt/.ri/cache/.doc_dirs (Errno::EACCES)
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:384:in `open'
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:384:in
`create_class_cache'
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:371:in
`class_cache'
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:591:in `block in
run'
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:590:in `each'
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:590:in `run'
from /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri/driver.rb:300:in `run'
from /usr/local/ruby/bin/ri:5:in `<main>'
pt@pt-laptop:~$ sudo ri Integer#times
[sudo] password for pt:
sudo: ri: command not found
pt@pt-laptop:~$ sudo /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri
Integer#times
sudo: /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri: command not found
pt@pt-laptop:~$ cd /usr/local/ruby/lib/ruby/1.9.1/rdoc/ri
pt@pt-laptop:/usr/local/ruby/lib/ruby/1.9.1/rdoc/ri$ ls
cache.rb display.rb formatter.rb reader.rb writer.rb
descriptions.rb driver.rb paths.rb util.rb
pt@pt-laptop:/usr/local/ruby/lib/ruby/1.9.1/rdoc/ri$

why can't i use my ri?how can i do?
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