我想在终端上安装 IceCat 但它不起作用。
$ sudo add-apt-repository ppa:gnuzilla-team/ppa && sudo apt-get update && sudo apt-get install icecat -y
Cannot access PPA (https://launchpad.net/api/1.0/~gnuzilla-team/+archive/ppa) to get PPA information, please check your internet connection.