fuser:tldr:85149

The command "fuser --mount ${filename_or_directory}" is used to display the process IDs of current processes that have any files or directories within the specified mount point or filesystem as their current working directory, or have any files or directories within it open.

Here's a breakdown of the command:

• "fuser" is the command name that stands for "file user." It is used to identify processes using files or sockets.
• "--mount" is an option for the "fuser" command. It specifies that the command should only consider files or directories within a particular mount point or filesystem.
• "${filename_or_directory}" is a placeholder for the actual name of a file or directory (or its path) that you want to check for active processes. You should replace it with the specific file or directory you want to target.

When you execute this command, it will return a list of process IDs (PIDs) for all processes currently using files or directories within the specified mount point or filesystem.