Mac 若有使用到 Ports、brew 安裝另外的套件，一段時間後會想要升級，升級語法要怎麼下？
Mac Ports、brew 升級語法
Ports Upgrade
- Ports 位置：/opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports/
- sudo port sync
- sudo port selfupgrade
- port upgrade outdated
Brew Upgrade
- brew update
- brew upgrade
Xcode Upgrade
- sudo xcode-select --install