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Top Forums Shell Programming and Scripting Search Mulitiple String pattern in a file Post 302146900 by chella on Friday 23rd of November 2007 01:41:25 AM
Old 11-23-2007
Quote:
Originally Posted by krishnan_6015@y
Hi,

I need to search for a multiple string pattern(5 key words) in a file(similar to a flat file) ,and i need to store the output in a another file .

In that file we may have mutiple occurrences of the key words.and i need only the unique.

kindly help out.


Thanks,
Mohana Krishnan

Hi Mohana Krishnan,

I don't understand this line. Can you explain it.

In that file we may have mutiple occurrences of the key words.and i need only the unique.

To search multiple patterns in a file u can use grep with -e option.

grep -e pattern1 -e pattern2 -e pattern3 filename > newfile.

Regards,
Chella
 

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Tcl_StringMatch(3)					      Tcl Library Procedures						Tcl_StringMatch(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tcl_StringMatch, Tcl_StringCaseMatch - test whether a string matches a pattern SYNOPSIS
#include <tcl.h> int Tcl_StringMatch(str, pattern) int Tcl_StringCaseMatch(str, pattern, flags) ARGUMENTS
const char *str (in) String to test. const char *pattern (in) Pattern to match against string. May contain special characters from the set *?[]. int flags (in) OR-ed combination of match flags, currently only TCL_MATCH_NOCASE. 0 specifies a case-sensitive search. _________________________________________________________________ DESCRIPTION
This utility procedure determines whether a string matches a given pattern. If it does, then Tcl_StringMatch returns 1. Otherwise Tcl_StringMatch returns 0. The algorithm used for matching is the same algorithm used in the string match Tcl command and is similar to the algorithm used by the C-shell for file name matching; see the Tcl manual entry for details. In Tcl_StringCaseMatch, the algorithm is the same, but you have the option to make the matching case-insensitive. If you choose this (by passing TCL_MATCH_NOCASE), then the string and pattern are essentially matched in the lower case. KEYWORDS
match, pattern, string Tcl 8.5 Tcl_StringMatch(3)
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