If it was a temporary mount (or listed
as noauto in /etc/fstab), it won??™t be remounted at boot time.
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Running Servers Part V
The command is umount, not unmount. This is easy to get wrong.
If you get the message device is busy when you try to unmount a file system, it means the
unmount failed because the file system is being accessed. Most likely, one of the directories in the
NFS file system is the current directory for your shell (or the shell of someone else on your system).
The other possibility is that a command is holding a file open in the NFS file system (such as a text
editor). Check your Terminal windows and other shells, and cd out of the directory if you are in it,
or just close the Terminal windows.
If an NFS file system won??™t unmount, you can force it (umount -f /mnt/maple) or unmount
and clean up later (umount -l /mnt/maple). The -l option is usually the better choice because
a forced unmount can disrupt a file modification that is in progress.
Other Cool Things to Do with NFS
You can share some directories to make it convenient for a user to work from any of several different
Linux computers on your network. Some examples of useful directories to share are:
/var/spool/mail??”By sharing this directory from your mail server and mounting it
on the same directory on other computers on your network, you can enable users to
access their mail from any of those other computers.
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