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Top Forums UNIX for Dummies Questions & Answers Finding processes on another system that have a file open Post 302844104 by Special_K on Friday 16th of August 2013 11:58:47 AM
Old 08-16-2013
Finding processes on another system that have a file open

I am familiar with using "lsof <filename>" or "fuser <filename>" to determine what process has a given file (usually a .nfs) open. However, I recently used this command and it returned a blank list. I suspect the process that has the .nfs file open might be on another system. Is there a way to determine what process has a file open if the process is on another system?
 
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fuser(1M)																 fuser(1M)

NAME
fuser - list processes using a file or file structure SYNOPSIS
file ... file ...] ... DESCRIPTION
The 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: file is current directory of the process. file is the root directory of the process, as set up by the command (see chroot(1M)). The process has file open. The process has file memory mapped. 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 has the following options: Display the use of a mount point and any file beneath that mount point. Each file must be a file system mount point. Display the use of the named file only, not the files beneath it if it is a mounted file system. This is the default. Display the login user name in parentheses following each process ID. Send the 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 cur- rently in force. Operands has the following operand: file One of the following values: o With the option, the name of a file. o With the option, the name of a mounted file system or special file. o With the option, the name of a file system mount point. NETWORKING FEATURES
You can use with NFS file systems or files. If the file name is in the format used in to identify an NFS file system, 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, 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. List process IDs and login names of processes that have the password file open. Combine both the above examples into a single command line. If the device is mounted on directory list the process IDs and login names of processes using the device. Alternately, if is the mount point for an NFS file system, list process IDs and login names of processes using that NFS file system. If 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. SEE ALSO
ps(1), mount(1M), kill(2), signal(2). STANDARDS CONFORMANCE
fuser(1M)

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