Difference between revisions of "Useful commands"

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Parsing internet addresses from a log file, sorting, counting;
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Parsing ipv4 addresses from a log file, sorting, counting;
<pre>
 
grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}" maillog | sort | uniq -c
 
 
<pre>
 
<pre>
 +
grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}" maillog | sort | uniq -c | sort -n
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 +
</pre>

Latest revision as of 15:44, 19 December 2018

Parsing ipv4 addresses from a log file, sorting, counting;

grep -E -o "([0-9]{1,3}[\.]){3}[0-9]{1,3}" maillog | sort | uniq -c | sort -n