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Top Forums Shell Programming and Scripting Umount an entire device with multiple file systems Post 302466770 by temp4746 on Wednesday 27th of October 2010 09:10:48 AM
Old 10-27-2010
Question Umount an entire device with multiple file systems

I wish to umount in a bash script a specific device (/dev/sdb for example) that has multiple mounted file systems. how will I go about doing this?

Also is there a way to get a list of removable devices currently connected and offer the user a selection of them? (The devices themself not their mounts)
And also it would be nice to be know how to display a formatted list of mounts from a certain device.

Thanks for any help.
 

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FSTAB(5)							File Formats Manual							  FSTAB(5)

NAME
fstab, mtab - list of file systems to mount, mounted file system table. SYNOPSIS
/etc/fstab /etc/mtab DESCRIPTION
/etc/fstab is a table of file system to mount at boot time, /etc/mtab is a table of currently mounted file systems as maintained by mount and umount. /etc/fstab is not read by mount as it should be. It is instead a simple shell script listing the three devices that Minix needs to oper- ate: The device names of the root file system, the temporary (scratch) file system, and the file system for /usr. Of these only the /usr file system is mounted in /etc/rc, the scratch file system is there for the system administrator to test new kernels, or as a temporary file system. /etc/mtab contains lines of four fields. The layout is: device directory type options These fields may be explained as follows: device A block special device. directory Mount point. type Either 1, or 2, indicating a V1 or V2 file system. options Either ro, or rw, indicating a read-only or read-write mounted file system. FILES
/etc/fstab Shell script naming three important file systems. /etc/mtab List of mounted file systems. SEE ALSO
printroot(8), mount(1), fsck(1), mkfs(1). BUGS
/etc/fstab is a joke. AUTHOR
Kees J. Bot (kjb@cs.vu.nl) FSTAB(5)
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