Can’t run ”gem install bundle’ in git bash termina

Question

I'm new to Web development with Sinatra. I've been trying to run bundle install command in git-bash terminal, but it's says that:

I've then tried to install bundler but then I'm kept getting this error:

I can't even run gem install bundler command in git-bash terminal. Please tell me what to do ??

I'm working on windows 7 x64bit system.

Answer 1

Make sure that:

• ruby for Windows is installed
• your %PATH% is modified to reference ruby (Advanced System Settings / Environment Variables / System Variables / Path: enter: C:\Path\to\Ruby\bin;)
• rubygem is installed. (If you use rubyinstaller, that should be already the case)

Then open a new CMD session, and type bash (the bash from Git should open).
Then ruby should be available, including gem.