fuser.1m (2010 09)

f
fuser(1M) fuser(1M)
NAME
fuser - list processes using a file or file structure
SYNOPSIS
/usr/sbin/fuser
[-c-f][-ku] file ... [ [
-][-c-f][-ku] file ...] ...
DESCRIPTION
The
fuser command lists the process IDs of processes that have each specified file open. For block spe-
cial devices, all processes using any file on that device are listed. The process ID may be followed by a
letter, identifying how the file is being used, as follows:
c file is current directory of the process.
r file is the root directory of the process, as set up by the
chroot command (see chroot (1M)).
o The process has file open.
m The process has file memory mapped.
t file is the text file of the process.
The process IDs associated with each file are printed to standard output as a single line separated by
spaces and terminated with a single newline. All other output — the file name, the letter, and the user
name — is written to standard error.
Options
fuser has the following options:
-c Display the use of a mount point and any file beneath that mount point. Each file must be a
file system mount point.
-f Display the use of the named file only, not the files beneath it if it is a mounted file system.
This is the default.
-u Display the login user name in parentheses following each process ID.
-k Send the SIGKILL signal to each process using each file. You must have appropriate
privileges to kill processes that you do not own.
You can respecify options between groups of files. The new set of options replaces the old set. A dash (
-)
by itself cancels all options currently in force.
Operands
fuser has the following operand:
file One of the following values:
• With the
-f option, the name of a file.
• With the
-f option, the name of a mounted file system or special file.
• With the
-c option, the name of a file system mount point.
NETWORKING FEATURES
You can use
fuser with NFS file systems or files. If the file name is in the format used in
/etc/mnttab to identify an NFS file system, fuser treats the NFS file system as a block special device
and identifies any process using that file system.
If contact with an NFS file system is lost,
fuser fails, since contact is required to obtain the file system
identification. Once the NFS file system is recontacted, stale file handles from the previous contact can be
identified, provided that the NFS file system has the same file system identification.
EXAMPLES
Terminate all processes that are preventing disk drive 1 from being unmounted, listing the process ID
and login name of each process being killed.
fuser -ku /dev/dsk/c201d1s?
List process IDs and login names of processes that have the password file open.
fuser -u /etc/passwd
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1