LFS 6.8: Error in 6.46 IPRoute
bwcode4u at gmail.com
Sat Mar 26 09:59:24 PDT 2011
On Fri, Mar 25, 2011 at 4:30 PM, Bruce Dubbs <bruce.dubbs at gmail.com> wrote:
> bsquared wrote:
>> I think there may be a problem with this chapter.
>> $ sed -i '1289i\\tfilter.cloned = 2;' ip/iproute.c
>> The instruction ^ in the chapter, changes the file.
>> the actual change to the file was:
>> tfilter.cloned = 2;
>> which caused this error:
>> iproute.c: In function 'iproute_list_flush_or_save':
>> iproute.c:1289:1: error: 'tfilter' undeclared (first use in this function)
>> iproute.c:1289:1: note: each undeclared identifier is reported only
>> once for each function it appears in
>> I believe the expected change is:
>> filter.cloned = 2;
>> if I change the sed command to include a new line between the
>> backslashes it works as expected.
>> $ sed -i '1289i\
>>> \tfilter.cloned = 2;' ip/iproute.c
> I think you omitted a backslash when you ran the command. The \\ is an
I copy/pasted from book to a script and to terminal, same result in both cases.
> escaped backslash so that sed uses \t or tab. Make sure you used single
> quotes and not double quotes. That also could have caused the error.
> -- Bruce
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The sed man page seems to indicate that a newline is required after
the backslash for a,c and i commands.
In any event, I wanted to post my finding in case others run into the
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