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Top Forums Shell Programming and Scripting Grep a file that may contain strange characters Post 302588253 by hakermania on Saturday 7th of January 2012 07:55:51 PM
Old 01-07-2012
Power Grep a file that may contain strange characters

Hello unix users Smilie

I am trying to grep a string from a file that both the file and the string may have characters in them that are quite... strange, like würzburger.

Well, bash reads this as
Code:
W%C3%BCrzburger

For example, if i do
Code:
wget W%C3%BCrzburger

the output is:
Code:
--2012-01-08 02:54:29--  http://w%C3%BCrzburger/
Resolving würzburger... failed: Name or service not known.
wget: unable to resolve host address `würzburger'

On the other hand, if a file has this word inside it, and I do
Code:
cat file | grep W%C3%BCrzburger

i get no matching :/

Why is this? how can this be solved?
Many thanks Smilie
 

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SVK::Log::Filter::Grep(3)				User Contributed Perl Documentation				 SVK::Log::Filter::Grep(3)

SYNOPSIS
SVK::Log::Filter::Grep - search log messages for a given pattern DESCRIPTION
The Grep filter requires a single Perl pattern (regular expression) as its argument. The pattern is then applied to the svn:log property of each revision it receives. If the pattern matches, the revision is allowed to continue down the pipeline. If the pattern fails to match, the pipeline immediately skips to the next revision. The pattern is applied with the /i modifier (case insensitivity). If you want case-sensitivity or other modifications to the behavior of your pattern, you must use the "(?imsx-imsx)" extended pattern (see "perldoc perlre" for details). For example, to search for log messages that match exactly the characters "foo" you might use svk log --filter "grep (?-i)foo" However, to search for "foo" without regards for case, one might try svk log --filter "grep foo" The result of any capturing parentheses inside the pattern are not available. If demand dictates, the Grep filter could be modified to place the captured value somewhere in the stash for other filters to access. If the pattern contains a pipe character ('|'), it must be escaped by preceding it with a '' character. Otherwise, the portion of the pattern after the pipe character is interpreted as the name of a log filter. STASH
/PROPERTY MODIFICATIONS Grep leaves all properties and the stash intact. perl v5.10.0 2008-08-04 SVK::Log::Filter::Grep(3)
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