From owner-freebsd-questions  Fri Mar 15  0:39:14 2002
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Date: Fri, 15 Mar 2002 02:39:05 -0600
To: parv <parv_@yahoo.com>
Cc: f-q <freebsd-questions@freebsd.org>
Subject: Re: /usr/bin/printf & printing escaped characters
In-Reply-To: <20020315080839.GA18963@moo.holy.cow>
References: <20020315080839.GA18963@moo.holy.cow>
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From: "Mike Meyer" <mwm-dated-1016613546.2a263a@mired.org>
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In <20020315080839.GA18963@moo.holy.cow>, parv <parv_@yahoo.com> typed:
> i was trying to print escaped characters (\n & \t), but couldn't...
> 
> # /usr/bin/printf %s "\tpolka dot\n"
> \tpolka dot\n
> 
> ...despite having listed in the man page...
> 
>  Character escape sequences are in backslash notation as defined in the
>  ANSI X3.159-1989 (``ANSI C'').  The characters and their meanings are as
>  follows:
> 
>        \a      Write a <bell> character.
>        \b      Write a <backspace> character.
>        \f      Write a <form-feed> character.
>        \n      Write a <new-line> character.
>        \r      Write a <carriage return> character.
>        \t      Write a <tab> character.
>        \v      Write a <vertical tab> character.
>        \'      Write a <single quote> character.
>        \\      Write a backslash character.
>        \num    Write an 8-bit character whose ASCII value is the 1-, 2-,
>                or 3-digit octal number num.
> 
> ...i didn't see anything else in there.  what am i missing?

That you can't escape characters in a string brought in via %s?
Putting the \n & \t in the format works fine for me.

guru% printf "\t%s\n" "polka dot"
	polka dot

	<mike
--
Mike Meyer <mwm@mired.org>			http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.

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