我认为我在尝试安装 ruby 时弄乱了一些组件，而且virtualenv-2.7似乎没有损坏。
我甚至不确定我是否正确地描述了问题，因为我无法找出问题所在，更不用说解决方案了。它不在bash_profile（基于我有限的理解，这是我唯一真正的线索）。我甚至不知道在哪里可以找到它，也不知道该搜索什么。
运行virtualenv-2.7结果为：
$ which virtualenv-2.7
/usr/bin/which: no virtualenv-2.7 in (/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-use ... nv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.rbenv/shims:/home/ec2-user/.linuxbrew/bin:/home/ec2-user/.linuxbrew/bin:/usr/local/rvm/gems/ruby-2.3.3/bin:/usr/local/rvm/gems/ruby-2.3.3@global/bin:/usr/local/rvm/rubies/ruby-2.3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/usr/local/rvm/bin:/home/ec2-user/.local/bin:/home/ec2-user/bin)
结束于
...：/home/ec2-user/.rbenv/shims：/home/ec2-user/.linuxbrew/bin：/home/ec2-user/.linuxbrew/bin：/usr/local/rvm/gems/ruby-2.3.3/bin：/usr/local/rvm/gems/ruby-2.3.3@global/bin：/usr/local/rvm/rubies/ruby-2.3.3/bin：/usr/local/bin：/bin：/usr/bin：/usr/local/sbin：/usr/sbin：/sbin：/opt/aws/bin：/usr/local/rvm/bin：/home/ec2-user/.local/bin：/home/ec2-user/bin）
我在尝试安装时发现了这一点certbot
$ sudo ./certbot-auto --debug renew
软件包 python27-pip-6.1.1-1.23.amzn1.noarch 已安装且为最新版本
无需执行
创建虚拟环境...
./certbot-auto：第 864 行：virtualenv：未找到命令
我该如何修复此问题？卸载viartualenv-2.7并重新安装是否有帮助？如何解决？