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Homework and Emergencies Emergency UNIX and Linux Support Grep expression between double quotes Post 302381773 by Scrutinizer on Sunday 20th of December 2009 02:41:29 PM
Old 12-20-2009
Quote:
Originally Posted by aaiaz
You may use egrep or grep as well and result here will be the same.
Code:
egrep ""http//.*"" 
or
egrep "\"http//.*\"" 
or
egrep '"http//.*"'

SmilieSmilieSmilieSmilieSmilie
This is not correct. You may want to search for "greedy matching", and look up the -o option. Also your quoting alternatives will prohibit the regex from being properly evaluated.

Last edited by Scrutinizer; 12-20-2009 at 04:22 PM..
 

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XZGREP(1)							     XZ Utils								 XZGREP(1)

NAME
xzgrep - search compressed files for a regular expression SYNOPSIS
xzgrep [grep_options] [-e] pattern file... xzegrep ... xzfgrep ... lzgrep ... lzegrep ... lzfgrep ... DESCRIPTION
xzgrep invokes grep(1) on files which may be either uncompressed or compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options specified are passed directly to grep(1). If no file is specified, then the standard input is decompressed if necessary and fed to grep(1). When reading from standard input, gzip(1) and bzip2(1) compressed files are not supported. If xzgrep is invoked as xzegrep or xzfgrep then egrep(1) or fgrep(1) is used instead of grep(1). The same applies to names lzgrep, lze- grep, and lzfgrep, which are provided for backward compatibility with LZMA Utils. ENVIRONMENT
GREP If the GREP environment variable is set, xzgrep uses it instead of grep(1), egrep(1), or fgrep(1). SEE ALSO
grep(1), xz(1), gzip(1), bzip2(1), zgrep(1) Tukaani 2009-07-05 XZGREP(1)
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