All listening sockets lsof

List every TCP listener with PID, no name resolution; modern: ss -ltnp

lsof -nP -iTCP -sTCP:LISTEN

#lsof #network #monitoring #troubleshooting

more lsof all 19 commands →

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 Connections to remote host lsof -nP -i @<host>:<port>