The lsof command¶
The lsof command shows file infomation of all the files opened by a running process. It' name is also derived from the fact that, list open files > lsof
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.
Syntax:¶
lsof [-OPTION] [USER_NAME]
Examples:¶
- To show all the files opened by all active processes:
lsof
- To show the files opened by a particular user:
lsof -u [USER_NAME]
- To list the processes with opened files under a specified directory:
lsof +d [PATH_TO_DIR]
Options and their Functionalities:¶
| Option | Additional Options | Description |
|---|---|---|
-i | tcp/ udp/ :port | List all network connections running, Additionally, on udp/tcp or on specified port. |
-i4 | List all processes with ipv4 connections. | |
-i6 | List all processes with ipv6 connections. | |
-c | [PROCESS_NAME] | List all the files of a particular process with given name. |
-p | [PROCESS_ID] | List all the files opened by a specified process id. |
-p | ^[PROCESS_ID] | List all the files that are not opened by a specified process id. |
+d | [PATH] | List the processes with opened files under a specified directory |
+R | List the files opened by parent process Id. |
Help Command¶
Run below command to view the complete guide to lsof command. man lsof
Last update: 2022-05-12