You know about the World-Wide Web. Do you remember Gopher? Have you heard about Gemini? Well, you can check them all out from your SDF account.
You already know how to do this because you are reading this wiki, probably on your favorite web browser, but from shell at SDF, you can surf the World-Wide Web with several command line programs as well. Some popular options are:
lynx https://sdf.org
links https://sdf.org
elinks https://sdf.org
There are many ways to view gopherspace. The easiest for new users is one of the following:
Lynx is the text web browser.
In addition to web browsing, Lynx is also capable of browsing gopherspace.
From the SDF shell, you can issue the command:
$ lynx gopher://sdf.org/
and Lynx will start up at sdf.org's gopher root menu.
Floodgap.com provides a public gopher proxy that you can view in your web browser at https://gopher.floodgap.com/gopher/gw.
For more information, see the proxy info page: https://gopher.floodgap.com/gopher/
Made for browsing Gopherspace and Geminispace, too, you can use the homegrown (that is, made by an SDFer) 'bombadillo' browser
$ bombadillo gopher://sdf.org/
You can issue the gopher command, either from the SDF shell or from within the mkgopher command prompt.
You can use either of these Gemini browsers on the cluster or in the MetaArray:
As stated above for Gopher, bombadillo is for browsing Gopherspace and Geminispace, too. Type this at shell to use the homegrown 'bombadillo' browser:
$ bombadillo gemini://sdf.org
Because of the way bombadillo manages Gemini's TOFU security to protect you, if you get a “URL Fetch Error” from a site that you think you should be able to navigate to, you may need to purge your existing certificate and try again (if you are suspicious that the gemini site is compromised, maybe don't go?). For the example of gem.sdf.org renewing its certificate, in bombadillo, before navigating to gemini://gem.sdf.org, press [space] to enter command mode, which should put a : prompt at the bottom of the window. Enter:
p gem.sdf.org
…and press [return] to purge the old cert, and then [space]gemini://gem.sdf.org to navigate to the page, and it should load.
Amfora is a for-gemini browser that is a little less 'texty' than bombadillo, rendering lists and headlines with a little more style.
at shell type
$ amfora gemini://sdf.org
Amfora will ask you if you want to continue to a site that you already have a (non-matching) certificate for, which will take care of the updating for you if you tell it to.
Additionally, on the metaarray, you can use diohsc (located at /meta/sdf/bin/diohsc)
If you want to get into Gemini more, there are shell and graphical clients available for Linux, Windows, Mac, Android and IOS, you can look for them here: gemini://gemini.circumlunar.space/software/