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Top Forums Shell Programming and Scripting search for a string spread in multiple line Post 302250018 by finder255 on Wednesday 22nd of October 2008 02:41:39 PM
Old 10-22-2008
Bug search for a string spread in multiple line

Hi,

I have to look for the full string below in a large file(>5GB) , but that string may be spread in two lines.

string :-- "f8f8 f5f0 f0f0 f1f7 f4f7 f7c1"

By grep "f8f8 f5f0 f0f0 f1f7 f4f7 f7c1" file | tail -1
, I am getting incorrect result because there is a line after this also which contains same string in two lines which does not get caught above ..

Please help..

Finder..
 

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GREP(1) 						      General Commands Manual							   GREP(1)

NAME
grep - search a file for lines containing a given pattern SYNOPSIS
grep [-elnsv] pattern [file] ... OPTIONS
-e -e pattern is the same as pattern -c Print a count of lines matched -i Ignore case -l Print file names, no lines -n Print line numbers -s Status only, no printed output -v Select lines that do not match EXAMPLES
grep mouse file # Find lines in file containing mouse grep [0-9] file # Print lines containing a digit DESCRIPTION
Grep searches one or more files (by default, stdin) and selects out all the lines that match the pattern. All the regular expressions accepted by ed and mined are allowed. In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or 1 occurrences, and | can be used between two regular expressions to mean either one of them. Parentheses can be used for grouping. If a match is found, exit status 0 is returned. If no match is found, exit status 1 is returned. If an error is detected, exit status 2 is returned. SEE ALSO
cgrep(1), fgrep(1), sed(1), awk(9). GREP(1)
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