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CVS commit: src/bin/echo

Module Name:    src
Committed By:   gutteridge
Date:           Wed Feb 26 02:09:46 UTC 2020

Modified Files:
        src/bin/echo: echo.1

Log Message:
echo.1: add a note about other echo implementations

The other BSDs all have a note reminding that many shells have their
own internal echo implementations which may vary from this utility, so
add one. (Much of the wording is borrowed from FreeBSD's man page.)

(The other BSDs also have notes about the -n option not really being
portable, and printf[1] being preferable, we might want to add
something about that, too.)

To generate a diff of this commit:
cvs rdiff -u -r1.17 -r1.18 src/bin/echo/echo.1

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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