Google search with "linux shell commands" returned "An A-Z Index of
the Bash command line for Linux."
http://ss64.com/bash/
The page returned above can be copied, pasted into LibreOffice, saved
and printed.
At the bottom of that page there is
More bash commands: Linux Command Directory from O'Reilly
Clicking the link " Linux Command Directory" gives
http://oreilly.com/linux/command-directory/