|HP-UX Reference > F
HP-UX 11i Version 3: February 2007
fuser — list processes using a file or file structure
The fuser command lists the process IDs of processes that have each specified file open. For block special 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:
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.
fuser has the following options:
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.
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.
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
Combine both the above examples into a single command line.
fuser -ku /dev/dsk/c201d1s? - -u /etc/passwd
If the device /dev/dsk/c201d1s7 is mounted on directory /home, list the process IDs and login names of processes using the device. Alternately, if /home is the mount point for an NFS file system, list process IDs and login names of processes using that NFS file system.
fuser -cu /home
If machine1:/filesystem/2mount is an NFS file system, list all processes using any file on that file system. If it is not an NFS file system, treat it as a regular file.