zopen provides lots of Unix-like packages on z/OS. Its home page says

The zopen community is here to provide popular Open Source tools and to encourage z/OS Open Source tools development. We currently host 200+ z/OS Open Source projects and we’re looking for more!

I wanted to install some packages to make my SSH shell on z/OS look like the Linux shell I know and love. This was easy, but not entirely straight forward.

You can list all the packages available using

zopen query –list

Install less

less pages through the content of a file.

I used

zopen install less

Once I had installed it and tried to use it, I got

WARNING: terminal is not fully functional
Press RETURN to continue 

I had to install ncurses, a programming library for creating textual user interfaces (TUIs) that work across a wide variety of terminals.

zopen install ncurses

and it worked.