ECO(1): echo
USAGE
usage: eco [-Dmnu] [-i chan] [-o chan] {arg}
-D: debug
-i chan: echo input from this chan (for testing other tools)
-m: issue one message per arg
-n: don't add a final newline
-o chan: output to this chan (for testing other tools)
-u: use unix out
DESCRIPTION
Eco is to Clive what echo is to UNIX.SOURCE
/zx/sys/src/clive/cmd/eco
