如题,RVM 的文档是这么说的
NOTE: A little bit about where the default and global gemsets differ. If you don't use a gemset at all, you get the gems in the 'default' set. If you use a specific gemset (say @testing), it will inherit gems from that ruby's @global. The 'global' gemset is to allow you to share gems to all your gemsets. The word 'default' quite literally says it all, eg. the gemset used without selecting one for a specific installed ruby.
说实话没太看懂,实际使用上有区别么?