fuser

Fuser is a command line tool available in Unix-like operating systems.

1. It is used to identify which processes are using a specific file, directory, or socket.
2. The tool provides information about the process ID (PID) and user associated with each process.
3. Fuser can be used to analyze and troubleshoot issues related to file system or network resources.
4. It helps in determining why a particular file or directory cannot be unmounted, as it indicates which processes are holding it open.
5. Fuser can also be used to terminate processes that are accessing a specified file or socket.
6. It can display information in various formats, such as process ID, user, command name, and terminal.
7. Fuser has the ability to search multiple files or directories simultaneously.
8. It can also be used with options like -k (kill) to forcefully terminate processes using a file or directory.
9. Fuser can be helpful in identifying and resolving issues related to locked or inaccessible resources.
10. With its versatile features, fuser proves to be a valuable tool in managing and troubleshooting processes involving files and directories in a command line environment.