3Usage guidelinesUse the | { begin | exclude | include } regular-expression option with a display command to filterthe command output. For more information about regular expressions, see FundamentalsConfiguration Guide.Examples# Display the lines that contain vlan in the running configuration. display current-configuration | include vlanvlan 1vlan 999port access vlan 999display | by-linenumUse display | by-linenum to number each output line for a display command.Syntaxdisplay command | by-linenumViewsAny viewPredefined user rolesnetwork-adminParameterscommand: Specifies the keywords and arguments of a display command. To display availablekeywords and arguments, enter display ?.Usage guidelinesBy numbering each output line from a display command, you can easily identify the lines of interest.Each line number is displayed as a 5-character string and might be followed by a colon (:) or hyphen(-). If you specify both | by-linenum and | begin regular-expression for a display command, ahyphen is displayed for all lines that do not match the regular expression.Examples# Display CPU usage information, with each output line identified by a number. display cpu-usage | by-linenum1: Slot 1 CPU 0 CPU usage:2: 14% in last 5 seconds3: 14% in last 1 minute4: 13% in last 5 minutes# Display the first line that begins with user-group in the running configuration and all of the followinglines. display current-configuration | by-linenum begin user-group114: user-group system115- #116- return