[NCLUG] bash question
milli at acmeps.com
Wed May 2 02:29:35 MDT 2007
Sean Reifschneider wrote:
> On Fri, Apr 27, 2007 at 07:00:07PM -0600, Warren Turkal wrote:
>> Is is the outer echo, or is it bash getting rid of it? Is it proper
> "-n" removes the trailing newline, which is obviously what is happening
> when you play with it a bit:
> guin:~$ echo "$(echo -ne "\n")" | od -c
> 0000000 \n
> guin:~$ echo -n "$(echo -ne "\n")" | od -c
Wow, I would not have expected either of these to work because the
double-quotes on the inner echo are not escaped... clearly, I have been
underestimating the power of ( ) .
> This may well be a bug in echo, because the documentation says that it just
> doesn't add a trailing newline, but clearly what is happening is that the
> trailing newline is being stripped, whether echo added it or not.
Sure looks that way to me as well. Of course, source code doesn't lie.
Documentation often does.
Michael Milligan -> milli at acmeps.com
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