Starts displaying the base command output for the matching token or expression.
Filter mode
The "|" symbol in this command does not act as a separator, but instead provides access to the filter command.
The following example starts displaying the output of the show running-config command after matching the expression, interface ethernet 0/18.
device# show running-config | begin "interface ethernet 0/18" interface ethernet 0/18 shutdown interface ethernet 0/19 shutdown interface management 0 ip address dhcp no ipv6 address dhcp no shutdown