What this snippet does
lsof maps open files and sockets back to the process that owns them.
Expected output
COMMAND PID USER NAME node 2841 appsvc *:8080 (LISTEN)
Why practise typing this
Typing processes code builds muscle memory for the symbols and indentation Linux uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Linux practice
- Listing processesProcesses · beginner
- Finding a process by nameProcesses · intermediate
- Asking a process to stopProcesses · beginner
- kill -9 skips cleanupProcesses · intermediate
- Signalling by name and userProcesses · intermediate
- Watching live resource useProcesses · beginner