How can I solve gems error?

I am using ruby-1.9.3.

I am deleting installed gems one by one by folllowing command:

gem uninstall “gem name”

That is works But when I am using that command for some gems like
“bigdecimal” then following output come:

gem uninstall bigdecimal
INFO: gem “bigdecimal” is not installed".

What is a meaning of this? Means should I take it as that gem is not
installed?

Kind regards.

If you want to see which gems are installed you can use the command “gem
list”.
I would expect that when Ruby says that a gem is not installed, that gem
is not installed.

Joel P. wrote in post #1142635:

If you want to see which gems are installed you can use the command “gem
list”.
I would expect that when Ruby says that a gem is not installed, that gem
is not installed.

Thank you for your answer.

Kind regards.