Splunk Search
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How can I write a search that shows just the first N characters of each line in my logs?

Engager

I have logs including some very long lines. To get overview of activity, I want to write a search that shows just the first N characters of each line. What is the simplest way to do this?

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Re: How can I write a search that shows just the first N characters of each line in my logs?

SplunkTrust
SplunkTrust

Use substr like this. Replace 'N' with the number of characters you want to show.

... | eval field=substr(field, 1, N) | ...
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If this reply helps you, an upvote would be appreciated.
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Re: How can I write a search that shows just the first N characters of each line in my logs?

Engager

Building on richgalloway's answer, but making in more specific for people like me who are still confused by field management. To SHOW the first 300 characters of the raw search output, I found two options.

To show shortened lines in raw form:
... | eval raw=substr(raw, 1, 300)

To show shortened lines in table form:
... | eval x=substr(_raw, 1, 300) | table x

View solution in original post

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Re: How can I write a search that shows just the first N characters of each line in my logs?

SplunkTrust
SplunkTrust

If your problem is resolved, please accept an answer. If you're still confused, I'd be happy to clarify.

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If this reply helps you, an upvote would be appreciated.