# lsof examples In this example we can see that the docs/index.md file is currently open by the tail command `[ben@jamyn ~/Documents/Projects/Python/mkdocs-pages]$ lsof docs/index.md` ```bash COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME tail 17481 ben 3r REG 0,49 240 1220028 docs/index.md ```