Ravi Sir's Cards › AWS
grep exit codes in scripts?
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
What it is
0 found, 1 not found, 2 error.
Why it matters
Quiet check.
grep -q ready status.txt && echo up
How / example
Fixed text with brackets.
grep -F "[ERROR]" log