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Top Forums UNIX for Dummies Questions & Answers removing duplicates of a pattern from a file Post 302232223 by dennis.jacob on Thursday 4th of September 2008 06:25:32 AM
Old 09-04-2008
Quote:
Originally Posted by era
Code:
perl -pe 'BEGIN { $i = 1 } ++$i while (s/PATTERN/NONESVCH_$i/); s/NONESVCH/PATTERN/g' file

The indexing will be zero-based if you take out the BEGIN part.
the same with awk:

Code:
awk 'BEGIN {cnt=1} { while($0 ~ /PATTERN/) sub(/PATTERN/,"xxxxx"cnt++, $0); gsub(/xxxxx/,"PATTERN_",$0); print; } ' filename

 

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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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