Q:

RVM installation: `/usr/local/rvm': Permission denied

demas@demas:~$ sudo rm -rf /etc/rvmrc /etc/profile.d/rvm.sh /usr/local/rvm

demas@demas:~$ curl -L https://get.rvm.io | bash -s stable
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   184  100   184    0     0    218      0 --:--:-- --:--:-- --:--:--   308
100 13145  100 13145    0     0  12150      0  0:00:01  0:00:01 --:--:-- 12150
mkdir: cannot create directory `/usr/local/rvm': Permission denied

How can I fix it ?

A:

As a quick variant of eliminating this problem you can create rvm directory and allow everyone to write to it:
sudo mkdir /usr/local/rvm; sudo chmod a+xwr /usr/local/rvm

A:

you need to clean shell environment variables before start new installation, th easiest way is to logout and login again.

