Using pipe to filter results - advanced -

[Carlos190]

Hi,

I´ve had a question for a while, I wanted to find a way to use include and exclude on a command at the same time. The closest I´ve been to it was in a CatOS issuing the command sh run | in (set span | ex set spantree) and the objective was to show only the span sessions and not the spanning tree configurations. Then I tried another ways on the same Catalyst and it didn´t work. On IOS it didn´t work at all. On Nexus there is a way to do a double pipe and reach the intended objective, but I want to know if that can be done on a IOS; and understand why another variants of the command that worked in CatOS are not working.

If someone could explain it at a code level it would be great.

Thanks,

Carlos

just to add something, I just tried sh run | in set span | ex set spantree and gets the same result of sh run | in (set span | ex set spantree), seems like CatOS also allows double piping just as Nexus

[Joseph W. Doherty]

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I've had similar results on IOS platforms, i.e. unable to effectively double pipe, and similar results on CRS-1, i.e. able to double pipe.  Guess it depends on how close the Cisco IOS is like an UNIX OS.