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Listing interfaces by type (or other selectors maybe?) is a nice to have feature. Sadly, RHEL7 seems not to support it yet:

# ip link show type bridge
Error: either "dev" is duplicate, or "bridge" is a garbage.

To enable this feature, the following upstream commit should be backported:

commit 712249d8fac88bcf3a9fd0b1de2263074075873b
Author: Vadim Kochan <vadim4j>
Date:   Wed Dec 10 10:11:29 2014 +0200

    ip link: Show devices by type
    
    Added new option 'type' to 'ip link show'
    command which allows to filter devices by type:
    
        ip link show type bridge
        ip link show type vlan
    
    Signed-off-by: Vadim Kochan <vadim4j>

Maybe a good opportunity to check if there are other simple enhancements missing which make life easier.

This is a duplicate of bug 1297000, just specific to link type bridge, which it should not be as upstream did not fix the issue for that type separately.

*** This bug has been marked as a duplicate of bug 1297000 ***