Interview Q&A / Linux & Shell
Linux & Shell interview questions
Permissions, processes, pipes and the commands you are expected to know cold.
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- How do you see which ports are listening and which process owns them?
Run sudo ss -tulpn. It lists TCP and UDP listening sockets with numeric ports and the owning process name and PID. ss has replaced the older netstat on modern Linux, and you can filter with grep or an expression like sport = :8080.
BeginnerQuick answer1 min read