Unix -bash终端设置heroku时出错

试图根据《开始指南》设置Heroku，但我遇到了一个

没有这样的文件或目录的问题。是什么导致了这种情况？我对这个
-bash
错误的经验是，它可能指向错误的空格或字符，或者显然没有文件，但我缺少什么呢

以下是设置中的控制台错误：

localhost:local cf$ heroku login
Enter your Heroku credentials.
Email: heroku@mydomain.org
Password (typing will be hidden): 
Found existing public key: /Users/cf/.ssh/id_rsa.pub
Uploading SSH public key /Users/cf/.ssh/id_rsa.pub... done
Enter your Heroku credentials.
Email: heroku@mydomain.org
Password (typing will be hidden): 
Authentication successful.
localhost:local cf$ cd ~/myapp
-bash: cd: /Users/cf/myapp: No such file or directory

帮助指南显示

Could not find an existing public key.
Would you like to generate one? [Yn]
Generating new SSH public key.
Uploading ssh public key /Users/adam/.ssh/id_rsa.pub

而我已经有了SSH密钥：

Found existing public key: /Users/cf/.ssh/id_rsa.pub
Uploading SSH public key /Users/cf/.ssh/id_rsa.pub... done

这是需要调查的事情吗？我还尝试了另一个终端实例，但没有成功。
您应该创建一个名为
myapp
的文件夹。之前：

localhost:local cf$ cd ~/myapp

写：

localhost:local cf$ mkdir ~/myapp
localhost:local cf$ cd ~/myapp

这不是希罗库的问题。您至少需要熟悉Unix。振作起来

~
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