# lsof

> Lists open files and the corresponding processes.
> Note: Root privileges (or sudo) is required to list files opened by others.

- Find the processes that have a given file open:

`lsof {{path/to/file}}`

- Find the process that opened a local internet port:

`lsof -i :{{port}}`

- Only output the process ID (PID):

`lsof -t {{path/to/file}}`

- List files opened by the given user:

`lsof -u {{username}}`

- List files opened by the given command or process:

`lsof -c {{process_or_command_name}}`

- List files opened by a specific process, given its PID:

`lsof -p {{PID}}`

- List open files in a directory:

`lsof +D {{path/to/directory}}`

- Find the process that is listening on a local TCP port:

`lsof -iTCP:{{port}} -sTCP:LISTEN`
