Deployment Guide

Command History
The Dell EMC Networking OS maintains a history of previously-entered commands for each mode. For example:
● When you are in EXEC mode, the UP and DOWN arrow keys display the previously-entered EXEC mode commands.
● When you are in CONFIGURATION mode, the UP or DOWN arrows keys recall the previously-entered CONFIGURATION
mode commands.
Filtering show Command Outputs
Filter the output of a show command to display specific information by adding | [except | find | grep | no-more |
save] specified_text after the command.
The variable specified_text is the text for which you are filtering and it IS case sensitive unless you use the ignore-case
sub-option.
Starting with Dell EMC Networking OS version 7.8.1.0, the grep command accepts an ignore-case sub-option that forces
the search to case-insensitive. For example, the commands:
● show run | grep Ethernet returns a search result with instances containing a capitalized “Ethernet,” such as
interface TenGigabitEthernet 1/1/1.
● show run | grep ethernet does not return that search result because it only searches for instances containing a
non-capitalized “ethernet.”
● show run | grep Ethernet ignore-case returns instances containing both “Ethernet” and “ethernet.”
The grep command displays only the lines containing specified text. The following example shows this command used in
combination with the show system brief command.
Example of the grep Keyword
DellEMC(conf)#do show system brief | grep 0
0 not present
NOTE:
Dell EMC Networking OS accepts a space or no space before and after the pipe. To filter a phrase with spaces,
underscores, or ranges, enclose the phrase with double quotation marks.
The except keyword displays text that does not match the specified text. The following example shows this command used in
combination with the show system brief command.
Example of the except Keyword
DellEMC#show system brief | except 1
Stack MAC : 4c:76:25:e5:49:40
Reload-Type : normal-reload [Next boot : normal-reload]
The find keyword displays the output of the show command beginning from the first occurrence of specified text. The
following example shows this command used in combination with the show system brief command.
Example of the find Keyword
The display command displays additional configuration information.
The no-more command displays the output all at once rather than one screen at a time. This is similar to the terminal
length command except that the no-more option affects the output of the specified command only.
The save command copies the output to a file for future reference.
NOTE:
You can filter a single command output multiple times. The save option must be the last option entered. For
example: DellEMC# command | grep regular-expression | except regular-expression | grep
other-regular-expression | find regular-expression | save.
40 Configuration Fundamentals