RubyGems is not installed. Please install it first.

[LeoJavaAI]

RubyGems 1.3.5 installed
ERROR: While executing gem ... (JSON::GeneratorError)
source sequence is illegal/malformed utf-8
true
true
Checking presence of the command: ruby
Ruby version: 1.8.7
Checking presence of the command: gem
Fatal error: RubyGems is not installed. Please install it first.

But gem is installed on my centos 6

[root@ip- cache]# which gem
/usr/local/rvm/rubies/ruby-1.8.7-p374/bin/gem

how do I fix?

[LeoJavaAI]

solved it by adding the below symlink

ln -s /usr/local/rvm/rubies/ruby-1.8.7-p374/bin/gem /usr/local/gem

[cybernet]

thanks for the "patch"