ECO(1): echo
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     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

     +o    /zx/sys/src/clive/cmd/eco

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      User's manual. Section 1. Copyright © LSUB 2014-2016