gem help env
$ gem help env Usage: gem environment [args] [options] Common Options: --source URL Use URL as the remote source for gems -p, --[no-]http-proxy [URL] Use HTTP proxy for remote operations -h, --help Get help on this command -v, --verbose Set the verbose level of output --config-file FILE Use this config file instead of default --backtrace Show stack backtrace on errors --debug Turn on Ruby debugging Arguments: packageversion display the package version gemdir display the path where gems are installed gempath display path used to search for gems version display the gem format version remotesources display the remote gem servers <omitted> display everything Summary: Display RubyGems environmental information