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Full Discussion: Tips/advise on alternative to doing egrep -v
Top Forums UNIX for Beginners Questions & Answers Tips/advise on alternative to doing egrep -v Post 303042291 by rbatte1 on Friday 20th of December 2019 07:57:30 AM
Old 12-20-2019
You should be aware of several things that can catch you:-
  • Using egrep is the same as grep -E so the string passed is an Extended Regular Expression. Along with | as an 'or' separator, it also means that the . is a wildcard for a single character. Searching for 192.168 will also match 192g168
  • You can group expressions or characters using [expression] so you can consolidate your search/exclude.

I'm not clear what the overall requirement for this is, but I think you are looking for sessions for user mickey that are/aren't from a specific set up IP addresses. Might I suggest:
Code:
egrep -v ^host=192\.168\.1\.10[123]|192\.168\.1\.123

If this is all there is, then it may be to better blend these together like 192\.168\.(10[123]|123)




I hope that this helps,
Robin
 

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LEARN ABOUT REDHAT

aggregate-ios

AGGREGATE-IOS(1)					      General Commands Manual						  AGGREGATE-IOS(1)

NAME

       aggregate-ios - optimise a concatenated set of cisco/IOS prefix filters to help make them nice and short.

SYNOPSIS

       aggregate-ios <source_config >optimised_config

DESCRIPTION

       Takes  cisco IOS configuration on stdin, and optimises any prefix filters found using aggregate(1).  Optimised filters are produced on std-
       out.

OPTIONS

       None.

DIAGNOSTICS

       Any diagnostics produced by aggregate(1) are passed through on stderr.

EXAMPLES

       The following configuration fragment:

	 ip prefix-list AS65530 description Foo, Inc
	 ip prefix-list AS65530 permit 10.1.0.0/16
	 ip prefix-list AS65530 permit 10.2.0.0/16
	 ip prefix-list AS65530 permit 10.2.1.0/24
	 ip prefix-list AS65530 permit 10.3.0.0/16
	 ip prefix-list AS65531 description Bar.Com
	 ip prefix-list AS65531 seq 5 permit 192.168.1.0/24
	 ip prefix-list AS65531 seq 10 permit 192.168.2.0/24
	 ip prefix-list AS65531 seq 15 permit 192.168.0.0/19

       is optimised as follows:

	 ip prefix-list AS65530 permit 10.1.0.0/16 le 24
	 ip prefix-list AS65530 permit 10.2.0.0/15 le 24
	 ip prefix-list AS65531 permit 192.168.0.0/19 le 24

SEE ALSO

       aggregate(1)

HISTORY

       Aggregate-ios was written by Joe Abley <jabley@mfnx.net>.

BUGS

       All those in aggregate(1) and then some :)

Joe Abley							 2000 November 27						  AGGREGATE-IOS(1)
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