When installing gems with the packaged Ruby, any command line binaries that are included with installed gems are not available in the path.
When the gems have previously (meaning in an earlier installed version of Ruby) been installed, they work as expected. I suspect this is because the binaries in /usr/bin/xxx are already present before installing the gem anew. I have seen the same behavior on a colleage's machine Example: $ gem install t Fetching: simple_oauth-0.3.0.gem (100%) Successfully installed simple_oauth-0.3.0 Fetching: naught-1.0.0.gem (100%) Successfully installed naught-1.0.0 <lots more output> $ t -bash: t: command not found $ ruby --version ruby 2.0.0p594 (2014-10-27) [i386-cygwin] $ uname -a CYGWIN_NT-6.1-WOW64 NOR-4911GS1 1.7.33-2(0.280/5/3) 2014-11-13 15:45 i686 Cygwin -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple