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cheatsheet-tldr/tldr/linux/fuser
2025-12-22 00:22:43 +00:00

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---
syntax: markdown
tags: [tldr, linux]
source: https://github.com/tldr-pages/tldr.git
---
# fuser
> Display process IDs currently using files or sockets.
> More information: <https://manned.org/fuser>.
- Find which processes are accessing a file or directory:
`fuser {{path/to/file_or_directory}}`
- Show more fields (`USER`, `PID`, `ACCESS`, and `COMMAND`):
`fuser {{[-v|--verbose]}} {{path/to/file_or_directory}}`
- Identify processes using a TCP socket:
`fuser {{port}}/tcp`
- Kill all processes accessing a file or directory (sends the `SIGKILL` signal):
`fuser {{[-k|--kill]}} {{path/to/file_or_directory}}`
- Find which processes are accessing the filesystem containing a specific file or directory:
`fuser {{[-m|--mount]}} {{path/to/file_or_directory}}`
- Kill all processes with a TCP connection on a specific port:
`fuser {{[-k|--kill]}} {{port}}/tcp`