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Full Discussion: Perl: taking text from a .txt file
Top Forums Shell Programming and Scripting Perl: taking text from a .txt file Post 37507 by criglerj on Thursday 19th of June 2003 05:52:01 PM
Old 06-19-2003
opendir/readdir is the wrong set of things to call for what you described. You want to "open" the file (I usually call it F if it's the only input file), then
Code:
while (<F>) {
    while (/\G(timepattern)/g) {
	print FILE $1, "\n"
    }
}

If you are supplying the file name on the command line, change "while (<F>)" to "while (<>)".

The inner while loop searches for all the substrings that match the regexp timepattern on an individual line. If you know there is at most one match for timepattern on a line, the inner "while" becomes "if (/(timepattern)/)". Constructing timepattern is a valuable enough skill that you should expend the effort to learn it on your own; see the perlre manpage. Or, as the textbooks say, it is left as an exercise for the reader.
 

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LEARN ABOUT DEBIAN

ssgrep

SSGREP(1)							       GNOME								 SSGREP(1)

NAME

       ssgrep - search spreadsheets for strings

SYNOPSIS

       ssgrep  [OPTIONS] [FILES]

DESCRIPTION

       This manual page briefly documents the ssgrep command.

       ssgrep is a command line utility to search for strings in spreadsheets of any format supported by gnumeric.

OPTIONS

       This  program  follows  the  usual GNU command line syntax, with single letter options starting with a single dash (`-') and longer options
       starting with two dashes (`--').

   Options controlling input file handling
       --recalc
	      Recalculate all cells

   Options controlling patterns and pattern matching
       -f, --keyword-file=FILE
	      The path to a text file containing one key per line

       -i, --ignore-case
	      Ignore differences in letter case

       -w, --word-regexp
	      Match only whole words

       -F, --fixed-strings
	      Pattern is a set of fixed strings

       -R, --search-results
	      Search results of expressions too

       -v, --invert-match
	      Search for cells that do not match

   Options controlling output in general
       -c, --count
	      Only print a count of matches per file

       -L, --files-without-matches
	      Print filenames without matches

       -l, --files-with-matches
	      Print filenames with matches

       -q, --quiet
	      Suppress all normal output

       -H, --with-filename
	      Print the filename for each match

       -h, --without-filename
	      Do not print the filename for each match

       -n, --print-locus
	      Print the location of each match

       -T, --print-type
	      Print the location type of each match

   Help options
       -V, --version
	      Display ssgrep's version

       -?, --help
	      Display the supported options

       --usage
	      Display a brief usage message

EXAMPLE

       To search for the string "SUM" in the file foo.gnumeric :

       ssgrep SUM foo.gnumeric

       To search for the strings from the file keywords in the spreadsheet foo.xls :

       ssgrep --keyword-file=keywords foo.xls

LICENSE

       ssgrep is licensed under the terms of the General Public License (GPL), version 2. For information on this license look at the source  code
       that came with the software or see the GNU project page <http://www.gnu.org>.

COPYRIGHT

       The copyright on ssgrep and the gnumeric software and source code is held by the individual authors as is documented in the source code.

AUTHOR

       ssgrep's primary author is Jody Goldberg <jody@gnome.org>; ssgrep builds on the gnumeric codebase.

       The initial version of this manpage was based on ssindex.1 by J.H.M. Dassen (Ray) <jdassen@debian.org>.

SEE ALSO

       beagled(1), gnumeric(1), ssconvert(1), ssindex(1)

       The Gnumeric Homepage <http://www.gnome.org/projects/gnumeric/>.

       The GNOME project page <http://www.gnome.org/>.

gnumeric							    2009-02-08								 SSGREP(1)
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