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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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