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Filter sections of your running configuration

The IOS command line interface has long included unix-style pipes that you could use to limit the output generated by the show commmands. Initially, the only available filters were begin (include everything after the first regular expression match), end (stop the output at the RE match) or include (include only matching lines).

IOS release 12.3(2)T (integrated in 12.4) brought us a few new filters, among them the section filter that includes or excludes whole sections (start of section being defined by a line with no leading space). You can use this filter to focus on parts of your router configuration. For example, to display only the routing protocols configuration, use show running | section include router command.

Of course, you can go a step further and define an alias, for example alias exec events show running | include ^event manager configuration command defines the exec-mode events command that lists all EEM applets.

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