Troubleshooting
Viewing Switch Configuration and Operation
Syntax: show boot-history
Displays the same information as the show interfaces command
and dynamically updates the output every three seconds. Press
Ctrl + C to stop the dynamic updates of system information.
Use the Arrow keys to view information that is off the screen.
Pattern Matching When Using the Show Command
The pattern matching option with the show command provides the ability to
do searches for specific text. Selected portions of the output are displayed
depending on the parameters chosen.
Syntax: show <command option> | <include | exclude | begin > <regular
expression>
Use 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.
Below are examples of what portions of the running config file display
depending on the option chosen.
ProCurve(config)# show run | include ipv6
ipv6 enable
ipv6 enable
ipv6 access-list "EH-01"
Displays only lines that contain “ipv6”.
ProCurve(config)#
Figure C-22. Example of Pattern Matching with Include Option
C-63
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