rvm list gemset displays a list of all rvm gemsets created for all ruby versions.
for example
ruby-1.9.3@a [ i686 ]
ruby-1.9.3@b [ i686 ]
ruby-1.9.3@c [ i686 ]
ruby-2.0.0@a [ i686 ]
ruby-2.0.0@b [ i686 ]
ruby-2.0.0@c [ i686 ]
ruby-2.1.0@a [ i686 ]
ruby-2.1.0@b [ i686 ]
ruby-2.1.0@c [ i686 ]
=> ruby-2.1.2@d [ i686 ]
gemset list rvm shows the gemset list for current ruby versions.
eg
gemsets for ruby-2.1.2 (found in /home/rails/.rvm/gems/ruby-2.1.2)
(default)
a
b
c
=> d
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