02-02-2009
How to extract first and last line of different record from a file
Hi all
I want to inquire that is there any unix command that can help me while extracting first and last line in a file ( TEST.dat)
for example in the below record i want to extract the line that are in BOLD text or in other words i want to extract line no 1,3,4 and 7
aa 1 2 3
aa 2 3 4
aa 3 4 5
bb 1 2 3
bb 2 3 4
bb 3 4 5
bb 4 5 6
Please help me, quick response will be highly appericiated
Regards,
Bungash
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LEARN ABOUT DEBIAN
tv_extractinfo_en
TV_EXTRACTINFO_EN(1p) User Contributed Perl Documentation TV_EXTRACTINFO_EN(1p)
NAME
tv_extractinfo_en - read English-language listings and extract info from programme descriptions.
SYNOPSIS
tv_extractinfo_en [--help] [--output FILE] [FILE...]
DESCRIPTION
Read XMLTV data and attempt to extract information from English-language programme descriptions, putting it into machine-readable form.
For example the human-readable text '(repeat)' in a programme description might be replaced by the XML element <previously-shown>.
--output FILE write to FILE rather than standard output
This tool also attempts to split multipart programmes into their constituents, by looking for a description that seems to contain lots of
times and titles. But this depends on the description following one particular style and is useful only for some listings sources
(Ananova).
If some text is marked with the 'lang' attribute as being some language other than English ('en'), it is ignored.
SEE ALSO
xmltv(5).
AUTHOR
Ed Avis, ed@membled.com
BUGS
Trying to parse human-readable text is always error-prone, more so with the simple regexp-based approach used here. But because TV listing
descriptions usually conform to one of a few set styles, tv_extractinfo_en does reasonably well. It is fairly conservative, trying to
avoid false positives (extracting 'information' which isn't really there) even though this means some false negatives (failing to extract
information and leaving it in the human-readable text).
However, the leftover bits of text after extracting information may not form a meaningful English sentence, or the punctuation may be
wrong.
On the two listings sources currently supported by the XMLTV package, this program does a reasonably good job. But it has not been tested
with every source of anglophone TV listings.
perl v5.14.2 2011-05-07 TV_EXTRACTINFO_EN(1p)