# phpman > info > umount.nfs [UMOUNT.NFS(8)](https://www.chedong.com/phpMan.php/man/UMOUNT.NFS/8/markdown) System Manager's Manual [UMOUNT.NFS(8)](https://www.chedong.com/phpMan.php/man/UMOUNT.NFS/8/markdown) NAME umount.nfs, umount.nfs4 - unmount a Network File System SYNOPSIS umount.nfs dir [-fvnrlh ] DESCRIPTION umount.nfs and umount.nfs4 are a part of [nfs(5)](https://www.chedong.com/phpMan.php/man/nfs/5/markdown) utilities package, which provides NFS client functionality. umount.nfs4 and umount.nfs are meant to be used by the [umount(8)](https://www.chedong.com/phpMan.php/man/umount/8/markdown) com- mand for unmounting NFS shares. This subcommand, however, can also be used as a standalone command with limited functionality. dir is the directory on which the file system is mounted. OPTIONS -f Force unmount the file system in case of unreachable NFS system. -v Be verbose. -n Do not update /etc/mtab. By default, an entry is created in /etc/mtab for every mounted file system. Use this option to skip deleting an entry. -r In case unmounting fails, try to mount read-only. -l Lazy unmount. Detach the file system from the file system hier- archy now, and cleanup all references to the file system as soon as it is not busy anymore. -h Print help message. NOTE For further information please refer [nfs(5)](https://www.chedong.com/phpMan.php/man/nfs/5/markdown) and [umount(8)](https://www.chedong.com/phpMan.php/man/umount/8/markdown) manual pages. FILES /etc/fstab file system table /etc/mtab table of mounted file systems SEE ALSO [nfs(5)](https://www.chedong.com/phpMan.php/man/nfs/5/markdown), [umount(8)](https://www.chedong.com/phpMan.php/man/umount/8/markdown), AUTHOR Amit Gud <> 6 Jun 2006 [UMOUNT.NFS(8)](https://www.chedong.com/phpMan.php/man/UMOUNT.NFS/8/markdown)