Here’s a quick reminder on how to use Ruby gems at the command line to search for remote packages and show all their versions.
This example searches for a gem called “wkhtmltoimage-binary”. By default, it will tell you which is the latest version of that particular gem.
$ gem search wkhtmltoimage-binary *** REMOTE GEMS *** wkhtmltoimage-binary (0.12.2)
If you want to search all available versions, because you might need a very specific one, you can query Ruby Gems with --remote --all.
$ gem search wkhtmltoimage-binary --remote --all *** REMOTE GEMS *** wkhtmltoimage-binary (0.12.2, 0.12.1, 0.12, 0.11.0.1.1, 0.11.0.1)
And as a bonus, if you want to install a specific version, you can do so with the -v parameter.
$ gem install wkhtmltoimage-binary -v 0.11.0.1 Fetching: wkhtmltoimage-binary-0.11.0.1.gem (100%) Successfully installed wkhtmltoimage-binary-0.11.0.1 ... 1 gem installed
Done.