lsof command with examples

lsof command with examples

lsof stands for list open files. Which will list information about files opened by processes.


Command to show all opened Internet sockets
#lsof -i

Command to print all tcp connections
#lsof -i tcp

Command to print all udp connections
#lsof -i udp

Command to find who are the users using the folder right now
#lsof +D /tmp

Command to print who and what are the files using in /dev/sda5 partitions
#lsof /dev/sda5

Command to list all the files associated with process ID 2665
#lsof +p 2665

Command to listing of files for processes executing the command that begins with vmstat
#lsof -c vmstat

Listing of files for processes executing the command that begins with character a
#lsof -c a

Command to print all the files opened by the user rajkumar
#lsof -u rajkumar

Scenario:
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Suppose consider that you are usnig nfs to transfer files between multiple systems in you local LAN. Assume that the folder which shares for NFS is /sharing, if you what to find out who all are the user’s using the folder means use the below command

#lsof +D /sharing

The above command will display who all the user’s using the folder right now.