sudo gem update --system
这句指令可能安装不上,会报这个错误
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted @ rb_sysopen - /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/gem
改为 gem update --system
sudo gem update --system
这句指令可能安装不上,会报这个错误
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted @ rb_sysopen - /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/gem
改为 gem update --system