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Top Forums Shell Programming and Scripting Need help grep multiple ports in a file. Post 303042316 by MadeInGermany on Saturday 21st of December 2019 07:16:27 AM
Old 12-21-2019
Only match 443 or 9443, most simple as ERE (egrep or grep -E)
Code:
egrep '^Listen[[:blank:]]+9?443$'

Using a Posix character class rather than a GNU \s
This User Gave Thanks to MadeInGermany For This Post:
 

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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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