Ravi Sir's Cards › AWS
Count data fast
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
Why do we need it?
Count lines.
wc -l orders.csv
What is it?
Count repeats.
sort ips.txt | uniq -c
How to do it
Only duplicates.
sort ids.txt | uniq -d
Example
Read gz logs.
zcat app.log.1.gz | wc -l