Find owner of port lsof

Show which process owns a port; -nP skips DNS/service name lookups for speed

lsof -nP -i :<port>

#lsof #network #troubleshooting #debug

more lsof all 19 commands →

All listening sockets lsof -nP -iTCP -sTCP:LISTEN Deleted open files lsof +L1 Who holds a file before umount lsof /mnt/<name> Free a stuck port lsof -t -i:<port> | xargs -r kill Detect CLOSE_WAIT leaks lsof -nP -i -sTCP:CLOSE_WAIT