FUSER(1) OpenBSD Reference Manual FUSER(1)NAMEfuser - identify process IDs holding specific files open
SYNOPSISfuser [-cfku] [-M core] [-N system] [-s signal] file ...
DESCRIPTION
The fuser utility writes to standard output the process IDs of processes
running on the local system that have one or more of the named files
open. If file is a mounted block device, the output will show all
processes having files opened on that file system.
The options are as follows:
-c The file is treated as a mount point and fuser will report on any
files open in the file system.
-f Report only for the named file(s).
-k Send the SIGKILL signal to each process.
-M core
Extract values associated with the name list from the specified
core instead of the running kernel.
-N system
Extract the name list from the specified system instead of the
running kernel.
-s signal
Send the specified signal to each process. The signal may be
specified as a signal number or as a symbolic name either with or
without the ``SIG'' prefix. Signal names are not case sensitive.
For example, the following signal arguments are equivalent:
``9'', ``kill'', ``SIGKILL''.
-u The real user ID of the process using the file will be printed in
brackets to standard error. If the username is unable to be
determined, the real user ID will be printed instead.
The -c and -f options are mutually exclusive.
The name of the file followed by a colon (`:') is printed to standard
error. The following characters may be printed to standard error after
the process ID if the described conditions are true:
c The file is the process's current working directory.
r The file is the process's root directory.
t The file is the process's executable text.
EXIT STATUS
The fuser utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
Print the process IDs of any processes holding files open under the /mnt
filesystem:
$ fuser-c /mnt
Send SIGTERM to any process holding a file open under the /mnt
filesystem:
# fuser-c -s term /mnt
Report on all files opened under the filesystem on which /dev/wd0a is
mounted:
$ fuser /dev/wd0a
Report on all processes currently holding /dev/wd0a open:
$ fuser-f /dev/wd0a
SEE ALSOfstat(1), kill(1), signal(3), mount(8)STANDARDS
The fuser utility is compliant with the IEEE Std 1003.1-2008 (``POSIX'')
specification.
The flags [-kMNs] are extensions to that specification.
OpenBSD 4.9 September 24, 2010 OpenBSD 4.9