what is lsof
lsof is a command meaning list open files, which is used in many Unix-like systems to report a list of all open files and the processes that opened them.This open source utility was developed and supported by Victor A. Abell, the retired Associate Director of the Purdue University Computing Center.sof is a command meaning list open files, which is used in many Unix-like systems to report a list of all open files and the processes that opened them.