RVM installation error linux ubuntu 16

Question

I am beginning out the with web development. I was trying to install RVM by following the steps given in http://installfest.railsbridge.org/installfest/linux

But when I try installing the RVM (step 3.1) via the terminal I get the error:

Answer 1

RVM is trying to check the authenticity of the file you have downloaded using the version of GPG you have installed, but it appears that your GPG trust database is inaccessible (or may not exist) per the error "can't open /home/sumitsh/.gnupg/trustdb.gpg :Permission denied".

You can reset the permissions to the trust database as follows:

chmod 0700 /home/sumitsh/.gnupg/trustdb.gpg

Then re-run the command.