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Top Forums Shell Programming and Scripting AWK print line no.x to line no.y Post 302553965 by cristalp on Friday 9th of September 2011 10:06:54 AM
Old 09-09-2011
Quote:
Originally Posted by ahamed101
Code:
#From 1 to 8
awk 'NR<=8 {print}' file

#Between 5 and 9 inclusive
awk 'NR>=5 && NR<=9 {print}' file

You can use FNR if you have multiple files.
NR is the total number of records for all the files.
FNR is specific to each file bring processed. FNR will be reset when a new file comes in.

Try this code to find the difference
Code:
awk '{print NR "-" FNR}' file1 file2

--ahamed
Thanks Ahamed!! It works. But then, if I just want to print one line, say 9th line.
Code:
awk 'NR =9 {print}' FILENAME

gave me all the lines in the file. How can I just print one specific line according to line number then?

Thanks again!!
 

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English(3pm)						 Perl Programmers Reference Guide					      English(3pm)

NAME
English - use nice English (or awk) names for ugly punctuation variables SYNOPSIS
use English; use English qw( -no_match_vars ) ; # Avoids regex performance penalty # in perl 5.16 and earlier ... if ($ERRNO =~ /denied/) { ... } DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get triggered just by accessing them (like $0) will still be affected. For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module. See perlvar for a complete list of these. PERFORMANCE
NOTE: This was fixed in perl 5.20. Mentioning these three variables no longer makes a speed difference. This section still applies if your code is to run on perl 5.18 or earlier. This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing use English qw( -no_match_vars ) ; . It is especially important to do this in modules to avoid penalizing all applications which use them. perl v5.18.2 2014-01-06 English(3pm)
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