gem 相關命令

gem

#查看gem源
gem sources
# 刪除默認的gem源
gem sources --remove http://rubygems.org/
# 增長taobao做爲gem源
gem sources -a http://ruby.taobao.org/
# 查看當前的gem源
gem sources
*** CURRENT SOURCES ***
http://ruby.taobao.org
# 請確保只有 ruby.taobao.org
# 清空源緩存
gem sources -c
# 更新源緩存
gem sources -u