OverView

lsof
list all open files

• to list all open files

lsof

• to list opened files by process belong to specific user

lsof -u [username]

• list opened files based on their internet address

lsof -i 4
lsof -i 6

• list opened files based on specific pid

lsof -p [pid]
lsof -p [^pid], use ^ means exclude the pid

• list pids which process open the specific file

lsof -t [filename with path]

• limit lsof to a directory

lsof +D [directory]

• list all internet and x.25 network files

lsof -i 没有参数

• list all opened files based on port range

lsof -i :1-1024

• list all opened files based on type of connection (tcp/udp)

lsof -i udp

• list parent pid of the process

lsof -p [pid] -R
attention, use "-R"

Lsof Reference