Linux 新手，尝试安装 Heroku toolbelt 失败，Google 无结果，特来求助高人指点下，感谢。

安装运行的是这个命令

wget -qO- https://toolbelt.heroku.com/install-ubuntu.sh | sh

机器已翻墙所以应该没有网络连接的问题，最后报错：

The following extra packages will be installed:
  foreman heroku
The following NEW packages will be installed:
  foreman heroku heroku-toolbelt
0 upgraded, 3 newly installed, 0 to remove and 1 not upgraded.
Need to get 872 kB of archives.
After this operation, 0 B of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  foreman heroku heroku-toolbelt
E: There are problems and -y was used without --force-yes

而后运行 heroku

$ heroku
heroku: command not found