![]() By its nature this will generally have larger outputs than grep if used as the initial operand, but it is powerful when understood and used properly. The âexceptâ command is essentially the same as grep but performed in reverse. ![]() S4810-17#$ning-config interface | grep Ethernet|address | grep Ethernet|/ Secondary grep focuses on a unique string in the initial grep output. S4810-17#show running-config interface | grep Ethernet|address Since â.â cannot by grepped (â.â matches any character) and â/â can match multiple other configuration lines, you will want to create an initial grep argument to pare down the output, and then direct that output through a secondary grep to weed out false positives. For example, when checking the configuration of all interfaces to determine if they have an IP address assigned â the interface configuration will either have the line âno ip addressâ or âip address X.X.X.X/Yâ. How about instances where your desired string is present in lines that you do not want to include. Output 00.00 Mbits/sec, 0 packets/sec, 0.00% of line-rate Input 00.00 Mbits/sec, 0 packets/sec, 0.00% of line-rate TenGigabitEthernet 0/0 is up, line protocol is upÄ throttles, 0 discarded, 0 collisions, 0 wreddrops S4810-17#show interface tengigabitethernet 0/0 | grep Ethernet|throttle|% Strings containing spaces must be enclosed in double-quotes. Multiple strings â where your output will be all lines with any of the given strings â are indicated by separating the strings with a pipe ("|") character. The key is to find unique strings that are only present on the lines you care about. Since the vast majority of the output is unnecessary information, it saves time (both in waiting for the information to output, and finding the relevant information amongst the immaterial) to cut down what is output to the information we actually care about. Time since last interface status change: 2w4d2h Output 00.00 Mbits/sec, 0 packets/sec, 0.00% of line-rate Input 00.00 Mbits/sec, 0 packets/sec, 0.00% of line-rate Last clearing of "show interface" counters 2w4d2hÄ¥0184 64-byte pkts, 0 over 64-byte pkts, 0 over 127-byte pktsÄ over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pktsÄ¥0398 packets, 3225472 bytes, 0 underrunsÄ¥0398 64-byte pkts, 0 over 64-byte pkts, 0 over 127-byte pktsÄ¥0398 Multicasts, 0 Broadcasts, 0 UnicastsÄ throttles, 0 discarded, 0 collisions, 0 wreddrops Pluggable media present, SFP+ type is 10GBASE-SR TenGigabitEthernet 0/0 is up, line protocol is up S4810-17#show interface tengigabitethernet 0/0 To view interface statistics you would normally use "show interfaces ![]() Save â Directs the output of the command to a specified local or remote file. Useful when logging is enabled in your terminal emulator client and you are saving large dumps (e.g. No-more â Outputs all data at once, with no prompts to advance to the next page of text. Useful for items that should only appear once, such as a particular MAC/IP when showing the ARP or MAC address tables In FTOS, there are 5 âpipeâ commands that can be used to modify or alter the way output is presented or handled:įind - Outputs only the first instance of a given argument. To reduce the amount of information, and focus on the important data, you can use the âgrepâ command to reduce the amount of output from a given command. Working with large outputs in the CLI can be daunting and overwhelming.
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