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Full Discussion: Grep line above X condition
Homework and Emergencies Homework & Coursework Questions Grep line above X condition Post 302416971 by EAGL€ on Wednesday 28th of April 2010 07:08:52 AM
Old 04-28-2010
its no that easy to achive your requirement, but i can partially help you.

first of all to find Nth occurance of a pattern in a file use this one liner (N=4):

Code:
nawk -F\: -v occ="4" '$NF~/pattern/{i++} i==occ{print $0;exit}' infile

and to be able to get 1 line before (1 line above!) and 0 line after a pattern:

Code:
/usr/sfw/bin/ggrep "pattern" -A0 -B1 infile

using the above knowlende you can try to create a script for your aim.

regards
 

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FC-PATTERN(1)															     FC-PATTERN(1)

NAME
fc-pattern - parse and show pattern SYNOPSIS
fc-pattern [ -cdVh ] [ --config ] [ --default ] [ [ -f format ] [ --format format ] ] [ --version ] [ --help ] [ pattern [ element... ] ] DESCRIPTION
fc-pattern parses pattern (empty pattern by default) and shows the parsed result. If --config is given, config substitution is performed on the pattern before being displayed. If --default is given, default substitution is performed on the pattern before being displayed. If any elements are specified, only those are printed. OPTIONS
This program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. -c Perform config substitution on pattern. -d Perform default substitution on pattern. -f Format output according to the format specifier format. -V Show version of the program and exit. -h Show summary of options. pattern Parses and displays pattern (uses empty pattern by default). element If set, the element property is displayed for parsed pattern. SEE ALSO
FcNameParse(3) FcConfigSubstitute(3) FcDefaultSubstitute(3) FcPatternPrint(3) FcPatternFormat(3) fc-cat(1) fc-cache(1) fc-list(1) fc- match(1) fc-query(1) fc-scan(1) The fontconfig user's guide, in HTML format: /usr/share/doc/fontconfig/fontconfig-user.html. AUTHOR
This manual page was updated by Behdad Esfahbod <behdad@behdad.org>. Apr 20, 2010 FC-PATTERN(1)
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