device; the second, for a slave device. min is a slave device's minor de vice
number; and PID, cmd, FD and mode are the same as with pipe endpoint information.
Note: psudoterminal endpoint information is only available when the compile flags
line of -V output contains HASPTYEPT.
UNIX socket file endpoint information is displayed in the NAME column in the
form ''type=TYPE ->INO=INODE PID,cmd,FDmode'', where TYPE is the socket type;
INODE is the i-node number of the connected socket; and PID, cmd, FD and mode are
the same as with pipe endpoint information. Note: UNIX socket file endpoint in
formation is available only when the compile flags line of -v output contains
HASUXSOCKEPT.
Multiple occurrences of this information can appear in a file's NAME column.
-E specfies that Linux pipe and Linux UNIX socket files should be displayed
with endpoint information, but not the files of the endpoints.
+|-f [cfgGn]
f by itself clarifies how path name arguments are to be interpreted. When
followed by c, f, g, G, or n in any combination it specifies that the listing of
kernel file structure information is to be enabled ('+') or inhibited ('-').
Normally a path name argument is taken to be a file system name if it matches
a mounted-on directory name reported by mount(8), or if it represents a block
device, named in the mount output and associated with a mounted directory name.
When +f is specified, all path name arguments will be taken to be file system
names, and lsof will complain if any are not. This can be useful, for example,
when the file system name (mounted-on device) isn't a block device.
This happens for some CD-ROM file systems.
When -f is specified by itself, all path name arguments will be taken to
be simple files. Thus, for example, the ''-f -- /'' arguments direct lsof to
search for open files with a '/' path name, not all open files in the '/' (root)
file system.
Be careful to make sure +f and -f are properly terminated and aren't followed
by a character (e.g., of the file or file system name) that might be taken as a
parameter. For example, use ''--'' after +f and -f as in these examples.
$ lsof +f -- /file/system/name
$ lsof -f -- /file/name
The listing of information from kernel file structures, requested with the +f
[cfgGn] option form, is normally inhibited, and is not available in whole or part
for some dialects - e.g., /proc-based Linux kernels below 2.6.22.
When the prefix to f is a plus sign ('+'), these characters request file
structure information:
c file structure use count (not Linux)
f file structure address (not Linux)
g file flag abbreviations (Linux 2.6.22 and up)
G file flags in hexadecimal (Linux 2.6.22 and up)
n file structure node address (not Linux)
When the prefix is minus ('-') the same characters disable the listing of the
indicated values.
File structure addresses, use counts, flags, and node addresses may be
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