$ ruby -v
$ ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
我有:
rvm list rubies
rvm rubies
ree-1.8.7-2011.03 [ x86_64 ]
* ruby-1.9.3-p125 [ x86_64 ]
# => - current
# =* - current && default
# * - default
但我得到:
$ ruby soduko.rb
nil
nil
我无法切换到 1.9.3:
rvm use 1.9.3
Gemset '' does not exist, 'rvm gemset create ' first, or append '--create'.
$ rvm gemset create
# Noting(?)
$ rvm gemset create md
Gemset '' does not exist, 'rvm gemset create ' first, or append '--create'.
$ ruby -v
$ ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]