gem install permission problem

Question

qichunren@zhaobak:~> gem install hpricot
ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don\'t have write permissions into the /opt/ruby-enter         


        

Answer 1

For a systemwide Ruby install, become root. For example:

$ sudo gem install hpricot

However, the modern approach in many circumstances, including in development, is to use a tool that lets you easily install and use Ruby as a normal user. This lets you avoid having to become root. There are a few such tools, and the one I use is RVM.

# install rvm into your ~
$ \curl -sSL https://get.rvm.io | bash -s stable

# install latest version of ruby into your ~
$ rvm install ruby

# installs a gem into your ~
$ gem install $SOME_GEM_NAME