Ravi Sir's Cards › AWS
tail vs journalctl
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
Logs
tail
Reads a text log file.
journalctl
Reads the systemd journal.
Key points
-F follows rotation.
-u filters a service.
Example
tail -F /var/log/app.log
Use when
App writes to a file.
Service logs to journal.