Can't add sources with gem

Question

I'm trying to add http://rubygems.org/ in my sources because I can't use 'gem install NAME' (this error : Could not find a valid gem 'dashing' (>= 0) in any repository). So, I did this command : gem sources -a http://rubygems.org/ the result : ERROR: While executing gem ... (Gem::OperationNotSupportedError) Not connected to a tty and no default specified I give you my ENV : ``` $ gem env RubyGems Environment: - RUBYGEMS VERSION: 2.4.5.1 - RUBY VERSION: 2.2.4 (2015-12-16 patchlevel 230) [i386-mingw32] - INSTALLATION DIRECTORY: C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0 - RUBY EXECUTABLE: C:/RailsInstaller/Ruby2.2.0/bin/ruby.exe - EXECUTABLE DIRECTORY: C:/RailsInstaller/Ruby2.2.0/bin - SPEC CACHE DIRECTORY: C:/Users/mramart/.gem/specs - SYSTEM CONFIGURATION DIRECTORY: C:/ProgramData - RUBYGEMS PLATFORMS: - ruby - x86-mingw32 - GEM PATHS: - C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0 - C:/Users/mramart/.gem/ruby/2.2.0 - GEM CONFIGURATION: - :update_sources => true - :verbose =>…

Accepted Answer

In such cases, I directly make changes to my Gem Config file. Here is an updated version of `~/.gemrc`:

```
---
:backtrace: false
:bulk_threshold: 1000
:sources:
- http://rubygems.org
:update_sources: true
:verbose: true
```

Here's how to verify:

```
$ gem sources
http://rubygems.org/
```

Can't add sources with gem

Solution

Problem