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Full Discussion: Recursively grep for a pattern and print that whole word
Top Forums Shell Programming and Scripting Recursively grep for a pattern and print that whole word Post 302973017 by Aia on Friday 13th of May 2016 12:12:22 AM
Old 05-13-2016
Code:
grep -ohr "[-[:alnum:]]*\.xyz\.com"

A . (dot) does match a literal dot, but also any character except the newline. If you want to match a literal dot you need to escape it.

Substituting [:alpha:] for [:alnum:] will include digits.

You do not need the last trailing [:alpha:]*

This is not, by any means, fool proofed, since you keep showing us different information on each post on what to match.
 

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LEARN ABOUT NETBSD

zegrep

ZGREP(1)						    BSD General Commands Manual 						  ZGREP(1)

NAME

     zgrep, zegrep, zfgrep -- print lines matching a pattern in gzip-compressed files

SYNOPSIS

     zgrep [grep-flags] [--] pattern [files ...]

     zegrep [grep-flags] [--] pattern [file ...]

     zfgrep [grep-flags] [--] pattern [file ...]

DESCRIPTION

     zgrep runs grep(1) on files or stdin, if no files argument is given, after decompressing them with zcat(1).

     The grep-flags and pattern arguments are passed on to grep(1).  If an -e flag is found in the grep-flags, zgrep will not look for a pattern
     argument.

     zegrep calls egrep(1), while zfgrep calls fgrep(1).

EXIT STATUS

     In case of missing arguments or missing pattern, 1 will be returned, otherwise 0.

SEE ALSO

     egrep(1), fgrep(1), grep(1), gzip(1), zcat(1)

AUTHORS

     Thomas Klausner <wiz@NetBSD.org>

BSD
								 December 28, 2003							       BSD
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