linux-kernel - What does echo -c do (as found in dynamic-debug-howto.txt)

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Message-ID: <52BC698A.9030805@ahsoftware.de>
Date:	Thu, 26 Dec 2013 18:38:18 +0100
From:	Alexander Holler <holler@...oftware.de>
To:	linux-kernel@...r.kernel.org
CC:	linux-doc@...r.kernel.org, Jason Baron <jbaron@...hat.com>
Subject: What does echo -c do (as found in dynamic-debug-howto.txt)

Hello,

I've just read Documentation/dynamic-debug-howto.txt (again) and I 
wonder what the parameter -c for echo is for (found at lines 94 ff).

Neither echo from coreutils nor the buildin from bash do know the 
parameter -c.

The paragraph which made me curious starts with

-----
Command Language Reference
==========================

At the lexical level, a command comprises a sequence of words separated
by spaces or tabs.  So these are all equivalent:

nullarbor:~ # echo -c 'file svcsock.c line 1603 +p' >
                                 <debugfs>/dynamic_debug/control
nullarbor:~ # echo -c '  file   svcsock.c     line  1603 +p  ' >
                                 <debugfs>/dynamic_debug/control
nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
                                 <debugfs>/dynamic_debug/control
-----

Is that -c a parameter for a buildin echo of one of the various shells, 
a typo (looks unlikely) or do I miss something else which make me look a 
noob?

Regards,

Alexander Holler
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