1.6 KiB
Executable File
1.6 KiB
Executable File
The lsof command
The lsof command shows file infomation of all the files opened by a running process. It's 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