Searching for text using pattern matching with show command

Selected portions of the output are displayed, depending on the parameters chosen.

Syntax: 


show {< command option > | < include | exclude | begin >} <regular expression>

Uses matching pattern searches to display selected portions of the output from a show command. There is no limit to the number of characters that can be matched. Only regular expressions are permitted; symbols such as the asterisk cannot be substituted to perform more general matching.

include

Only the lines that contain the matching pattern are displayed in the output.

exclude

Only the lines that contain the matching pattern are not displayed in the output.

begin

The display of the output begins with the line that contains the matching pattern.

NOTE:

Pattern matching is case-sensitive.

Following are examples of what portions of the running config file display depending on the option chosen.

Pattern matching with include option

switch(config)# show run | include ipv6 1
   ipv6 enable
   ipv6 enable
ipv6 access-list "EH-01"
switch(config)#

  • 1Displays only lines that contain “ipv6”.

Pattern matching with exclude option

switch(config)# show run | exclude ipv6 1

Running configuration:

; J9299A Configuration Editor; Created on release #WB.15.XX

hostname "Switch"
snmp-server community "notpublic" Unrestricted
vlan 1
  name "DEFAULT_VLAN"
  untagged A1-A24,B1-B20
  ip address dhcp-bootp
  no untagged B21-B24
  exit
vlan 20
  name "VLAN20"
  untagged B21-B24
  no ip address
  exit
policy qos "michael"
  exit
  sequence 10 deny tcp 2001:db8:255::/48 2001:db8:125::/48
  exit
no autorun
password manager

  • 1Displays all lines that do not contain “ipv6”.

Pattern matching with begin option

switch(config)# show run | begin ipv6 1
   ipv6 enable
   no untagged 21-24
   exit
vlan 20
   name "VLAN20"
   untagged 21-24
   ipv6 enable
   no ip address
   exit
policy qos "michael"
   exit
ipv6 access-list "EH-01"
   sequence 10 deny tcp 2001:db8:255::/48 2001:db8:125::/48
   exit
no autorun
password manager

  • 1Displays the running config beginning at the first line that contains “ipv6”.

The following is an Example: of the show arp command output, and then the output displayed when the include option has the IP address of 15.255.128.1 as the regular expression.

The show arp command and pattern matching with the include option

switch(config)# show arp

 IP ARP table

  IP Address      MAC Address    Type    Port
  -------------   -------------- ------- ----
  15.255.128.1    00000c-07ac00  dynamic B1
  15.255.131.19   00a0c9-b1503d  dynamic
  15.255.133.150  000bcd-3cbeec  dynamic B1


switch(config)# show arp | include 15.255.128.1
  15.255.128.1    00000c-07ac00  dynamic B1