I hope my title isn't confusing. I've got a CentOS 5 machine and I had Ruby 1.8.7 installed on here. So in order to upgrade my Ruby installation and gems/rails I

• Uninstalled Ruby: sudo yum remove ruby

• Downloaded the latest stable release of ruby and untared it: wget... && tar -zxf ....

• Went through the usual installation:

  • ./configure --prefix=$HOME
  • make
  • sudo make install

• Downloaded rubygems: wget....

• ran the setup file: ruby setup.rb

Now my issue is that if I try to install rails, which I do by typing: gem install rails, I get the following message: "-bash: /usr/local/bin/gem: /usr/local/bin/ruby: bad interpreter: Permission denied"

So the next logical move (for me) was to type: sudo gem install rails, but that returns "sudo: gem: command not found", which means I've screwed up something royally.

Just to add some more information

whereis ruby: ruby: /usr/lib/ruby /usr/lib64/ruby /usr/local/bin/ruby /usr/local/lib/ruby

which ruby: ~/bin/ruby

I'm thinking that by installing ruby manually from source I've screwed up something, perhaps the --prefix=$HOME is the culprit here?