topic Re: How to read and write data to CSV lookup? in Splunk Search

How to read and write data to CSV lookup?

sbimizry — Fri, 09 Aug 2019 08:08:56 GMT

Hi, I must write and read data from lookup files.

Example:
cn,srcip,destip,owner
"Canada","207.188.75.136","192.1.104.10","user1"
"USA","62.249.72.118","192.168.1.11","user2"

and I tried to read data using | lookup file cn AS cn | table cn`but it did not work. and this too| lookup file cn OUTPUT cn`.

What should I do?

Re: How to read and write data to CSV lookup?

sheamus69 — Fri, 09 Aug 2019 09:40:21 GMT

If all you want to do is read the contents of the lookup try the inputlookup command.

For example,

|inputlookup file.csv

will list the entire contents of the lookup. You can search for a specific entry in the lookup using:

|inputlookup file.csv | search fieldname=whatever

To perform a lookup against the csv during a search would use the lookup command, like:

[main search] | lookup file.csv fieldname OUTPUT otherfieldnames|...

To write to a lookup you would use outputlookup.

For example:

|inputlookup file.csv|eval cn=if(cn=="something","something else",cn)|outputlookup file.csv

Will perform the lookup, and will change an entry in the field cn if it contains a specific value, and will then overwrite the original lookup (it is always advisable to test the results before performing this overwrite as errors can be embarrassing to fix).

Hope this helps,

Sheamus

Re: How to read and write data to CSV lookup?

sbimizry — Fri, 09 Aug 2019 09:50:34 GMT

I did it... [main search] | lookup file.csv fieldname OUTPUT otherfieldnames|... ... not worked

Re: How to read and write data to CSV lookup?

sheamus69 — Fri, 09 Aug 2019 11:00:15 GMT

What specifically are you trying to do with the lookup? Can you give an example?