LSFD(1)     <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>    LSFD(1)

<?><?><?><?><?>
       lsfd - <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>

<?><?><?><?><?><?><?><?> <?><?><?><?>
       lsfd [<?><?><?><?><?><?><?><?>]

<?><?><?><?>
       lsfd <?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> lsof(8) <?>
       <?><?><?><?><?><?><?><?> Linux. <?><?> <?><?><?><?><?><?><?> <?><?><?>
       lsof, lsfd <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?> Linux; <?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
       Linux <?><?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?>, <?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>. lsfd <?><?> <?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> lsof;
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?>.

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>. <?><?><?><?>,
       <?><?><?><?> <?><?> <?><?><?><?><?><?><?>, <?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?>. <?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> --output
       <?><?><?><?><?><?>-<?><?><?><?><?><?><?><?><?><?> <?>
       <?><?><?><?><?><?><?><?><?><?><?>, <?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> <?><?><?><?><?>.

       lsfd <?><?><?><?><?><?><?><?><?><?><?><?> Libsmartcols <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?>. <?><?><?>. <?><?><?><?> <?><?><?><?><?><?><?><?><?>
       --output <?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?> <?><?><?><?><?><?><?><?> --filter <?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?>.
       <?><?><?><?><?><?><?><?><?><?><?><?><?> lsfd --list-columns, <?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>.

<?><?><?><?><?><?><?><?><?>
       -l, --threads
           <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?>.

       -J, --json
           B<?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> JSON.

       -n, --noheadings
           <?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>.

       -o, --output <?><?><?><?><?><?>
           <?><?><?><?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?> <?><?><?><?><?><?><?>. <?><?><?>. <?><?><?><?><?><?>
           <<<?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>*,
           <?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>.

           <?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?><?>, <?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?> +<?><?><?><?><?><?>
           (<?><?><?><?><?><?><?><?><?>, lsfd -o +DELETED)

       -r, --raw
           <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?>.

       --notruncate
           <?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?>.

       -p, --pid pid-<?>
           <?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>. pid-<?> <?>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?>. <?><?> <?><?><?><?><?><?><?><?><?><?><?>,
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?>
           <?><?><?> <?><?><?><?><?><?><?>. <?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?> pidof(1). <?><?><?>.
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>.

           <?><?><?><?><?><?><?><?> -Q <?> <?><?><?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?> PID, <?><?><?><?><?><?><?><?><?> -Q (PID ==
           1), <?> <?><?><?><?><?><?><?><?> -p, <?><?><?><?><?><?><?><?><?> -p
           1, <?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?>, <?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> -p
           <?> <?><?><?><?><?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?> -p <?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?> -Q.

       -i[4|6], --inet[=4|=6]
           List only IPv4 sockets and/or IPv6 sockets.

       -Q, --filter <?><?><?><?><?>
           <?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>, <?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>. <?><?><?>.
           <?><?><?><?><?> scols-filter(5) <?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?>.

       -C, --counter
       <?><?><?><?><?>:<?><?><?><?><?>_<?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?>, <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?><?> <?> --summary. lsfd
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?> <?><?><?><?><?>. <?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> lsfd
           <?><?><?><?><?><?> <?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?>-<?><?><?><?><?><?><?><?><?><?><?><?>, <?>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?>
           <?><?><?><?><?>. lsfd <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> --filter
           <?><?> <?><?><?><?><?>; <?><?><?><?><?>, <?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

           See scols-filter(5) about filter_expr. label should not include {
           nor :. You can define multiple counters by specifying this option
           multiple times.

           <?><?><?>. <?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?>.

       --summary[=<?><?><?><?><?>]
           <?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?> <?><?><?><?><?><?>'<?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?>
           <?><?><?><?> only, append <?><?><?> never. <?><?><?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?>, <?><?><?><?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?> only.

           <?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?>. <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>.
           --counter <?> <?><?><?><?><?><?><?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>.
           <?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>, lsfd
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
           (<?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>) <?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

           <?><?><?><?><?>! <?><?><?><?><?><?><?><?><?><?><?><?> --summary <?>
           --json <?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?>. <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?> --summary=only <?> --json.

       --debug-filter
           <?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?> <?> <?><?><?><?><?>. <?><?><?><?><?><?><?>
           <?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?><?><?> lsfd.

       --dump-counters
           <?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?>, <?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
           --summary.

       --hyperlink[=<?><?><?><?><?>]
           Print paths as terminal hyperlinks. The mode can be set to
           "always", "never", or "auto". The optional argument when can be set
           to "auto", "never", or "always". If the when argument is omitted,
           it will default to "auto". The "auto" setting means that hyperlinks
           will only be used if the output is on a terminal.

       -H, --list-columns
           List available columns that you can specify at --output option.

       -h, --help
           <?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       -V, --version
           <?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?>.

<?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?> <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?> <?><?><?>.
       <?><?><?><?> <?><?><?><?> <?><?><?><?><?> <?> < <?> >.

       <?><?><?><?><?>! <?><?><?><?><?> <?> <?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?> <?><?>
       <?><?> <?> <?><?><?><?><?><?><?><?><?><?><?>. <?><?> <?><?><?><?>
       <?><?><?><?> <?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?>.

       AINODECLASS <<?><?><?><?><?>>
           <?><?><?><?> <?><?><?><?><?><?><?><?><?><?> inode.

       ASSOC <<?><?><?><?><?>>
           <?><?><?><?>'<?><?><?><?> <?><?><?><?><?> <?><?>
           <?><?><?><?><?><?><?>.

       BLKDRV <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
           <?><?><?><?><?><?><?><?><?> <?><?> /proc/devices.

       BPF-MAP.ID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?>'<?><?><?><?>
           bpf.

       BPF-MAP.TYPE <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?>
           <?><?><?><?>'<?><?><?><?> bpf.

       BPF-MAP.TYPE.RAW <<?><?><?><?><?>>
           <?><?><?> <?><?><?><?>'<?><?><?><?> bpf (<?><?><?>
           <?><?><?><?><?><?><?>).

       BPF.NAME <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?>'<?><?><?><?> bpf.

       BPF-PROG.ID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           bpf.

       BPF-PROG.TAG <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?> Bpf.

       BPF-PROG.TYPE <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?>
           <?><?><?><?><?><?><?><?> bpf.

       BPF-PROG.TYPE.RAW <<?><?><?><?><?>>
           <?><?><?> <?><?><?><?><?><?><?><?> bpf (<?><?><?>
           <?><?><?><?><?><?><?>).

       CHRDRV <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
           <?><?><?> <?><?><?><?><?><?><?><?><?> <?><?> /proc/devices.

       COMMAND <<?><?><?><?><?>>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?>, <?><?><?><?>
           <?><?><?><?><?><?><?><?> <?><?><?><?>.

       DELETED <<?><?><?><?><?><?>-<?><?><?><?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?>.

       DEV <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
           <?><?><?><?> <?><?><?><?><?><?><?> <?><?><?><?>.

       DEVTYPE <<?><?><?><?><?>>
           <?><?><?> <?><?><?><?><?><?><?><?> (blk, char <?><?><?> nodev).

       ENDPOINTS <string>
           <?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>
           IPC, <?><?> <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?> <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>.

           lsfd collects endpoints within the processes that lsfd scans; lsfd
           may miss some endpoints if you limits the processes with -p option.

           The format of the column depends on the object associated with the
           fd:

           <?><?><?> FIFO, <?><?><?> mqueue, <?><?><?><?><?><?><?> ptmx <?>
           pts
               PID,COMMAND,ASSOC[-r][-w]

               The last characters ([-r][-w]) represent the read and/or write
               mode of the endpoint.

           <?><?><?> eventfd
               PID,COMMAND,ASSOC

           UNIX-STREAM
               PID,COMMAND,ASSOC[-r?][-w?]

               About the last characters ([-r?][-w?]), see the description of
               SOCK.SHUTDOWN.

       EVENTFD.ID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> eventfd.

       EVENTPOLL.TFDS <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>, <?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?> eventpoll.

       FD <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>.

       FLAGS <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>.

       FUID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?>-<?><?><?><?><?><?><?><?>
           <?><?><?><?><?>.

       INET.LADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> IP-<?><?><?><?><?><?>.

       INET.RADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> IP-<?><?><?><?><?><?>.

       INET6.LADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> IP6-<?><?><?><?><?><?>.

       INET6.RADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> IP6-<?><?><?><?><?><?>.

       INODE <<?><?><?><?><?>>
           <?><?><?><?><?> inode.

       INOTIFY.INODES <<?><?><?><?><?>>
           Cooked version of INOTIFY.INODES.RAW. The format of the element is
           inode-number,source-of-inode.

       INOTIFY.INODES.RAW <<?><?><?><?><?>>
           List of monitoring inodes. The format of the element is
           inode-number,device-major:device-minor.

       KNAME <<?><?><?><?><?>>
           Raw file name extracted from from /proc/pid/fd/fd or
           /proc/pid/map_files/region.

       KTHREAD <<?><?><?><?><?><?>-<?><?><?><?><?><?><?><?>>
           <?><?><?><?><?><?><?><?>, <?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?> <?><?><?><?> <?><?> <?><?>.

       MAJ:MIN <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>, <?><?>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>.

       MAPLEN <<?><?><?><?><?>>
           <?><?><?><?><?><?><?> <?><?><?><?>'<?><?><?><?> <?><?><?><?><?>
           (<?><?> <?><?><?><?><?><?><?><?>).

       MISCDEV <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
           <?><?><?> <?><?><?><?><?><?><?><?><?> <?><?> /proc/misc.

       MNTID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>.

       MODE <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?> (rwx).

       NAME <<?><?><?><?><?>>
           Cooked version of KNAME. It is mostly same as KNAME.

           Some files have special formats and information sources:

           AF_VSOCK
               state=SOCK.STATE type=SOCK.TYPE laddr=VSOCK.LADDR[
               raddr=VSOCK.RADDR]

               raddr is not shown for listening sockets.

           bpf-map
               id=BPF-MAP.ID type=BPF-MAP.TYPE[ name=BPF.NAME]

           bpf-prog
               id=BPF-PROG.ID type=BPF-PROG.TYPE tag= BPF-PROG.TAG [
               name=BPF.NAME]

           eventpoll
               tfds=EVENTPOLL.TFDS

           eventfd
               id=EVENTFD.ID

           inotify
               inodes=INOTIFY.INODES

           misc:tun
               iface=TUN.IFACE

           NETLINK
               protocol=NETLINK.PROTOCOL[ lport=NETLINK.LPORT[
               group=NETLINK.GROUPS]]

           PACKET
               type=SOCK.TYPE[ protocol=PACKET.PROTOCOL][ iface=PACKET.IFACE]

           pidfd
               pid=TARGET-PID comm=TARGET-COMMAND nspid=TARGET-NSPIDS

               lsfd extracts TARGET-PID and TARGET-NSPIDS from
               /proc/pid/fdinfo/fd.

           PING
               state=SOCK.STATE[ id=PING.ID][ laddr=INET.LADDR [
               raddr=INET.RADDR]]

           PINGv6
               state=SOCK.STATE[ id=PING.ID][ laddr=INET6.LADDR [
               raddr=INET6.RADDR]]

           ptmx
               tty-index=PTMX.TTY-INDEX

               lsfd extracts PTMX.TTY-INDEX from /proc/pid/fdinfo/fd.

           RAW
               state=SOCK.STATE[ protocol=RAW.PROTOCOL [ laddr=INET.LADDR [
               raddr=INET.RADDR]]]

           RAWv6
               state=SOCK.STATE[ protocol=RAW.PROTOCOL [ laddr=INET6.LADDR [
               raddr=INET6.RADDR]]]

           signalfd
               mask=SIGNALFD.MASK

           TCP, TCPv6
               state=SOCK.STATE[ laddr=TCP.LADDR [ raddr=TCP.RADDR]]

           timerfd
               clockid=TIMERFD.CLOCKID[ remaining=TIMERFD.REMAINING [
               interval=TIMERFD.INTERVAL]]

           UDP, UDPv6
               state=SOCK.STATE[ laddr=UDP.LADDR [ raddr=UDP.RADDR]]

               lsfd hides raddr= if UDP.RADDR is 0.0.0.0 and UDP.RPORT is 0.

           UDP-LITE, UDPLITEv6
               state=SOCK.STATE[ laddr=UDPLITE.LADDR [ raddr=UDPLITE.RADDR]]

           UNIX-STREAM
               state=SOCK.STATE[ path=UNIX.PATH]

           UNIX
               state=SOCK.STATE[ path=UNIX.PATH] type=SOCK.TYPE

          Note that (deleted) markers are removed from this column.
          Refer to KNAME, DELETED, or XMODE to know the readability of
          the file from the file system.

       NETLINK.GROUPS <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> netlink.

       NETLINK.LPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?> netlink.

       NETLINK.PROTOCOL <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> netlink.

       NLINK <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>.

       NS.NAME <<?><?><?><?><?>>
           Name (NS.TYPE:[INODE]) of the namespace specified with the file.

       NS.TYPE <<?><?><?><?><?>>
           Type of the namespace specified with the file. The type is mnt,
           cgroup, uts, ipc, user, pid, net, time, or unknown.

       OWNER <<?><?><?><?><?>>
           <?><?><?><?><?><?><?> <?><?><?><?><?>.

       PACKET.IFACE <<?><?><?><?><?>>
           Interface name associated with the packet socket.

       PACKET.PROTOCOL <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> L3, <?><?><?><?> <?><?><?>'<?><?><?><?><?>
           <?><?> <?><?><?><?><?><?><?> <?><?><?><?><?><?>.

       PARTITION <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?>, <?><?><?><?><?><?><?><?><?> <?><?>
           /proc/partition.

       PID <<?><?><?><?><?>>
           PID <?><?><?><?><?><?><?>, <?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?>.

       PIDFD.COMM <<?><?><?><?><?>>
           <?><?><?><?><?><?><?> <?><?><?><?><?><?><?>, <?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?> pidfd.

       PIDFD.NSPID <<?><?><?><?><?>>
           Value of NSpid field in /proc/pid/fdinfo/fd of the pidfd.

           Quoted from kernel/fork.c of Linux source tree:

              If pid namespaces are supported then this function will
              also print the pid of a given pidfd refers to for all
              descendant pid namespaces starting from the current pid
              namespace of the instance, i.e. the Pid field and the
              first entry in the NSpid field will be identical.

              Note that this differs from the Pid and NSpid fields in
              /proc/<pid>/status where Pid and NSpid are always shown
              relative to the pid namespace of the procfs instance.

       PIDFD.PID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>,
           <?><?><?><?> <?><?><?><?><?><?><?><?><?><?> pidfd.

       PING.ID <`<?><?><?><?><?>`>
           ICMP echo request id used on the PING socket.

       POS <<?><?><?><?><?>>
           <?><?><?><?><?><?><?> <?><?><?><?><?>.

       RAW.PROTOCOL <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?> <?><?><?><?><?><?><?>.

       RDEV <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           (<?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?>).

       SIGNALFD.MASK <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>.

       SIZE <<?><?><?><?><?>>
           <?><?><?><?><?><?> <?><?><?><?><?>.

       SOCK.LISTENING <<?><?><?><?><?><?>-<?><?><?><?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?>.

       SOCK.NETS <<?><?><?><?><?>>
           inode, <?><?> <?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?>, <?><?>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?>.

       SOCK.PROTONAME <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?>.

       SOCK.SHUTDOWN <<?><?><?><?><?>>
           <?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>.

           [-r?]
               If the first character is r, the receptions are allowed. If it
               is -, the receptions are disallowed. If it is ?, the state is
               unknown.

           [-w?]
               If the second character is w, the transmissions are allowed. If
               it is -, the transmissions are disallowed. If it is ?, the
               state is unknown.

       SOCK.STATE <<?><?><?><?><?>>
           <?><?><?><?> <?><?><?><?><?><?>.

       SOCK.TYPE <<?><?><?><?><?>>
           Type of socket. Here type means the second parameter of socket
           system call:

           o   stream

           o   dgram

           o   raw

           o   rdm

           o   seqpacket

           o   dccp

           o   packet

       SOURCE <<?><?><?><?><?>>
           File system, partition, or device containing the file. For the
           association having ERROR as the value for TYPE column, lsfd fills
           this column with syscall:_errno_.

       STTYPE <<?><?><?><?><?>>
           Raw file types returned from stat(2): BLK, CHR, DIR, FIFO, LINK,
           REG, SOCK, or UNKN.

       TCP.LADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> <?><?><?><?><?><?> L3 (INET.LADDR
           <?><?><?> INET6.LADDR) <?> <?><?><?><?><?><?><?><?><?> <?><?><?><?>
           TCP.

       TCP.LPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?> TCP.

       TCP.RADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> L3 (INET.RADDR
           <?><?><?> INET6.RADDR) <?> <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?> TCP.

       TCP.RPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> TCP.

       TID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>
           <?><?><?><?><?><?><?>, <?><?><?><?> <?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?>.

       TIMERFD.CLOCKID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?>.

       TIMERFD.INTERVAL <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?>.

       TIMERFD.REMAINING <<?><?><?><?><?>>
           <?><?><?>, <?><?> <?><?><?><?><?><?><?><?><?>.

       PTMX.TTY-INDEX <<?><?><?><?><?>>
           <?><?><?><?><?><?> tty <?><?><?><?><?><?><?><?><?>.

       TUN.IFACE <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> <?>
           <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?>.

       TYPE <<?><?><?><?><?>>
           Cooked version of STTYPE. It is same as STTYPE with exceptions. For
           SOCK, print the value for SOCK.PROTONAME. For UNKN, print the value
           for AINODECLASS if SOURCE is anon_inodefs.

           If lsfd gets an error when calling a syscall to know about a target
           file descriptor, lsfd fills this column for it with ERROR.

       UDP.LADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> IP-<?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?> UDP.

       UDP.LPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?> UDP.

       UDP.RADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> IP-<?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> UDP.

       UDP.RPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> UDP.

       UDPLITE.LADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> IP-<?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?> UDPLite.

       UDPLITE.LPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?><?><?><?> UDP.

       UDPLITE.RADDR <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> IP-<?><?><?><?><?><?> <?>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> UDPLite.

       UDPLITE.RPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> UDP.

       UID <<?><?><?><?><?>>
           <?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?>.

       UNIX.PATH <<?><?><?><?><?>>
           <?><?><?><?> <?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
           <?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?> UNIX.

       USER <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>.

       VSOCK.LADDR <<?><?><?><?><?>>, VSOCK.RADDR <<?><?><?><?><?>>
           Local VSOCK address. The format of the element is
           VSOCK.LCID:VSOCK.LPORT.

           Well-known CIDs will be decoded: "*", "hypervisor", "local", or
           "host". Well-known ports will be decoded: "*".

       VSOCK.LCID <<?><?><?><?><?>>, VSOCK.RCID <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?><?><?><?><?> VSOCK.

       VSOCK.LPORT <<?><?><?><?><?>>, VSOCK.RPORT <<?><?><?><?><?>>
           <?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?><?>
           <?><?><?><?><?> VSOCK.

       XMODE <<?><?><?><?><?>>
           Extended version of MODE. This column may grow; new letters may be
           appended to XMODE when lsfd supports a new state of file
           descriptors and/or memory mappings.

           [-r]
               opened of mapped for reading. This is also in MODE.

           [-w]
               opened of mapped for writing. This is also in MODE.

           [-x]
               mapped for executing the code. This is also in MODE.

           [-D]
               <?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?>
               <?><?><?><?><?><?><?>. <?><?><?>. <?><?><?><?><?> DELETED.

           [-Ll]
               locked or leased. l represents a read, a shared lock or a read
               lease. L represents a write or an exclusive lock or a write
               lease. If both read/shared and write/exclusive locks or leases
               are taken by a file descriptor, L is used as the flag.

           [-m]
               Multiplexed. If the file descriptor is targeted by a eventpoll
               file or classical system calls for multiplexing (select,
               pselect, poll, and ppoll), this bit flag is set. Note that if
               an invocation of the classical system calls is interrupted,
               lsfd may fail to mark m on the file descriptors monitored by
               the invocation. See restart_syscall(2).

<?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?> lsfd <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?>. <?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?> <?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?>
       -Q (<?><?><?> --filter). <?> <?><?><?><?><?><?><?><?><?> <?>
       <?><?><?><?><?><?><?><?><?><?> -o (<?><?><?>*--output*) <?><?>
       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?><?>.

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?>, <?><?><?>
       <?><?><?>'<?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?> PID 1
       <?><?> PID 2:

           # lsfd -Q '(PID == 1) or (PID == 2)'

       <?><?> <?><?><?><?> <?> <?><?><?><?><?> <?><?><?><?><?><?>

           # lsfd -Q '(PID == 1) || (PID == 2)'

       <?><?> <?><?><?><?>, <?><?><?> <?> <?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?>

           # lsfd --pid 1,2

       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?>
       <?><?><?><?>

           # lsfd --pid '1 2'

       <?><?><?><?><?><?><?><?><?><?><?> pidof(1) <?><?><?> <?><?><?><?><?><?>
       <?><?><?><?><?><?>, <?><?><?> <?><?><?>'<?><?><?><?><?> <?><?>
       "firefox":

           # lsfd --pid "$(pidof firefox)"

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?>, <?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> PID 1:

           # lsfd -Q '(PID == 1) and (FD == 1)'

       <?><?> <?><?><?><?> <?> <?><?><?><?><?> <?><?><?><?><?><?>

           # lsfd -Q '(PID == 1) && (FD == 1)'

       <?><?><?><?><?><?> <?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>

           # lsfd -Q 'ASSOC == "exe"'

       <?><?> <?><?><?><?> <?> <?><?><?><?><?> <?><?><?><?><?><?>

           # lsfd -Q 'ASSOC eq "exe"'

       <?><?> <?><?><?><?>, <?><?><?> <?><?><?><?><?><?><?> <?><?><?><?>
       <?><?><?><?><?> <?><?><?><?><?><?>

           # lsfd -o NAME -Q 'ASSOC eq "exe"' | sort -u

       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>,
       <?><?><?> <?><?><?>'<?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?><?>

           # lsfd -Q 'DELETED'

       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?>

           # lsfd -Q 'TYPE != "REG"'

       <?><?><?><?><?><?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>

           # lsfd -Q 'DEVTYPE == "blk"'

       <?><?><?><?><?><?><?><?> <?><?> <?><?><?><?> <?><?><?><?><?><?><?><?>,
       <?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?> TYPE:

           # lsfd -Q 'TYPE == "BLK"'

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?>, <?>
       <?><?><?><?><?><?> <?><?><?><?> <?> <?><?><?><?><?><?><?> <<dconf>>:

           # lsfd -Q 'NAME =~ ".\*/dconf/.*"'

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?>, <?><?><?>
       <?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> QEMU:

           # lsfd -Q '(COMMAND =~ ".\*qemu.*") and (FD >= 0)'

       List timerfd files expired within 0.5 seconds:

           # lsfd -Q '(TIMERFD.remaining < 0.5) and (TIMERFD.remaining > 0.0)'

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
       <?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> unix:

           # lsfd  -Q 'TYPE == "UNIX-STREAM" && UNIX.PATH =~ ".+"' -oUNIX.PATH,PID,COMMAND,FD,SOCK.STATE,ENDPOINTS

       <?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?><?><?><?><?><?><?>,
       <?><?> <?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?> <?><?>
       <?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?> unix:

           # lsfd  -Q 'TYPE == "UNIX-STREAM" && UNIX.PATH == "@/tmp/.X11-unix/X0"' -oUNIX.PATH,PID,COMMAND,FD,SOCK.STATE,ENDPOINTS

<?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?> <?><?><?> <?><?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> netlink
       <?><?> <?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> unix:

           # lsfd --summary=only \
                   -C 'netlink sockets':'(NAME =~ "NETLINK:.*")' \
                   -C 'unix sockets':'(NAME =~ "UNIX:.*")'
           VALUE COUNTER
              57 netlink sockets
            1552 unix sockets

       <?><?> <?><?><?><?> <?><?><?>, <?><?><?> <?><?><?><?><?><?><?><?><?>
       <?> <?><?><?><?><?><?><?> JSON:

           # lsfd --summary=only --json \
                   -C 'netlink sockets':'(NAME =~ "NETLINK:.*")' \
                   -C 'unix sockets':'(NAME =~ "UNIX:.*")'
           {
              "lsfd-summary": [
                 {
                    "value": 15,
                    "counter": "netlink sockets"
                 },{
                    "value": 798,
                    "counter": "unix sockets"
                 }
              ]
           }

<?><?><?><?><?><?>
       lsfd <?> <?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?> util-linux,
       <?><?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?> 2.38.

<?><?><?><?><?><?>
       Masatake YAMATO <yamato@redhat.com>, Karel Zak <kzak@redhat.com>

<?><?><?><?><?> <?><?><?><?><?><?><?><?><?><?><?>
       bpftool(8), bps(8), lslocks(8), lsof(8), pidof(1), proc(5),
       scols-filter(5), socket(2), ss(8), stat(2), vsock(7)

<?><?> <?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?> <?><?><?><?>
       <?><?><?> <?><?><?><?><?><?><?><?><?><?> <?><?><?><?> <?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?><?> <?><?><?><?><?><?>
       <https://github.com/util-linux/util-linux/issues>

<?><?><?><?><?><?> <?><?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?><?> lsfd <?> <?><?><?><?><?><?><?><?>
       <?><?><?><?><?><?><?> util-linux, <?><?><?><?> <?><?><?><?><?>
       <?><?><?><?><?><?><?><?> <?> <?><?><?><?><?><?> <?><?><?><?> Linux
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.41                   2025-03-29                           LSFD(1)