iphone升级后，xcode无法调试了，需要升级。还是一如既往的费时间

iterm启动，zsh报错

dyld: Library not loaded: /usr/local/opt/gdbm/lib/libgdbm.4.dylib
Referenced from: /usr/local/bin/zsh
Reason: image not found
解决：试了很多方法，不好使
brew reinstall zsh && brew unlink zsh && brew link zsh，搞定

lauchpad有两个xcode

//www.greatytc.com/p/8fad65c428c4
defaults write com.apple.dock ResetLaunchPad -bool true
killall Dock

android studio 提示没有安装emulator。

点击install，报错，All packages are not available for download
设置了Http proxy的原因