Ravi Sir's Cards › AWS
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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?
Mode bits.
chmod 640 app.conf
What is it?
Owner and group.
chown app:app /srv/app
How to do it
Group only.
chgrp web /var/www
Example
Lock a file.
chattr +i /etc/resolv.conf