lsof

Lsof lists information about files opened by processes. An open file
may be a regular file, a directory, a block special file, a character
special file, an executing text reference, a library, a stream, or a
network file (Internet socket, NFS file, or UNIX domain socket.)  A
specific  file or all the files in a file system may be selected by
path.

          

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License: Zlib
URL: https://github.com/lsof-org/lsof