What is the benefit of using (lsof ) command in linux ?have you SEEN the man page of lsof? lsof is a tool to see open files. there are various other options of lsof , one example is listing which process opens a PORT, TRY this Code: [Select]lsof -i tcp:80 sometimes you try to umount a PARTITION, but it gives error saying you can't unmount. You can use lsof to check what is holding it up Code: [Select]lsof | grep /mnt/partition