This is LS.COM for CP/M.
It is pretty much equivalent to the Linux "ls" command, i.e. an improvement on DIR that shows filenames, file sizes, and lets you order by name or size.
It is written in C and can be compiled using Aztec C v1.06D from Manx Software Systems:
- cc ls.c
- as ls
- ln ls.o c.lib t.lib
The source code says that it was originally written by Bob Longoria. It was then changed slightly by Steve Kemp to make it compatible with Aztec C so that we can compile it on the Z80 Playground.