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<h2>ss: The ss command is useful utility for displaying socket statistics. To list all open services and their associated ports, use the following command: ss -tuln. Similar to netstat, this command will show TCP (-t) and UDP (-u) connections, listening (-l) ports, and display the port numbers (-n) instead of resolving them to service names
lsof: The lsof command lists open files, including network connections. To list open services and the ports they are using, run the following command: lsof -i. This will display all open network connections and associated processes. You can also combine it with the grep command to filter the output based on specific ports or services.
netstat: The netstat command displays active <a href="https://www.cloudastra.co/blogs/a-deep-dive-into-linux-cgroups-for-resource-management">network connections</a>, listening ports, and statistics. To list all open services and the ports they are using, run the following command: netstat -tuln. This will show <a href="https://www.cloudastra.co/blogs/tcp-handshake">TCP</a> (-t) and <a href="https://www.cloudastra.co/blogs/why-does-dns-use-udp-as-primary-preference-and-not-tcp">UDP</a> (-u) connections, listening (-l) ports, and display the port numbers (-n) instead of resolving them to service names. 
The vmstat command in Linux is used to provide information about virtual memory, system processes, CPU usage, and other system statistics. It displays a summary of memory, CPU, and I/O statistics at a given interval.</h2>
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The iostat command in Linux is used to report CPU, disk I/O, and partition statistics. It provides detailed information about input/output (I/O) operations and disk utilization.
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How to look for a mysterious process in Linux that is consuming too many resources

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How to look for a mysterious process in Linux that is consuming too many resources