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# updateds macport itself
sudo port selfupdate

# updates packages
sudo port upgrade outdated

# get DNS address
networksetup -getdnsservers Wi-Fi

# zip a folder (-x excluding, -r recursive)
zip -r destination.zip folderToZip -x "*.DS_Store"

# list listening ports
sudo lsof -i -n -P | grep TCP
sudo lsof -i | grep LISTEN | grep {PORT_NO}