sudo gem install cocoapods報如下錯誤:
ERROR: While executing gem ... (Errno::EPERM)
Operation not permitted - /usr/bin/xcodeproj
解決的辦法是:sudo gem install -n /usr/local/bin cocoapods
gem影像改成:https://ruby.taobao.org/
gem sources -l 列出服務器地址
gem sources --remove 列出的服務器地址
gem sources -a ?https://ruby.taobao.org/
?