From: Jean-Julien Fleck <jeanjulien.fleck@...>
Date: 2010-04-08T19:35:17+09:00
Subject: Re: how to use ri in my computer?

Hello Pen,

2010/4/8 Pen Ttt <myocean135@yahoo.cn>:
> 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)

It seems that there are some directory you can't read in ~/.ri.
Try

sudo chown -R pt home/pt/.ri

to recursively regain access to the directories, it should solve at
least this issue.

Cheers,

-- 
JJ Fleck
PCSI1 Lycée Kléber