Install 9base by entering the following commands in the terminal:
sudo apt update sudo apt install 9base
Description:
Plan 9 userland tools
9base is a port of following original Plan 9 userland tools to Unix: awk, basename, bc, cat, cleanname, date, dc, echo, grep, mk, rc, sed, seq, sleep, sort, strings, tee, test, touch, tr, uniq, and yacc.
Homepage: http://tools.suckless.org/9base
Version: 1:6-7build1
Section: universe/utils