ruby check if installed code example
Example: check all ruby version ubuntu
rvm list
rvm rubies
ruby-1.9.1-p431 [ i386 ]
=* ruby-1.9.2-p320 [ i386 ]
# => - current
# =* - current && default
# * - default
rvm list
rvm rubies
ruby-1.9.1-p431 [ i386 ]
=* ruby-1.9.2-p320 [ i386 ]
# => - current
# =* - current && default
# * - default