Why "umount -L label" don't work?

[vinnie]

The command

Code: [Select]

mount -L label work correctly but the counterpart don't.
I am wrong and the command is another?

[roberts]

Not supported as shown by:
umount --help

[vinnie]

ok, you know a command that uses the label to unmount a drive? 

[bmarkus]

ok, you know a command that uses the label to unmount a drive?  

You can script it easily. 'blkid' command returns both labels and the device in /dev/... format.

[vinnie]

Years later I'm trying again because I reneed this in a script.

Blkid -L label show me /dev/partition, in the script so that I can use this data to mount and umount and to indicate the path of a directory

es.
blkid -L label
/dev/sdb1
script:
mount "result of blkid)
cp /result of blkid/subtdirectory /other/directory
umont "result of blkid)

how can I do?

[curaga]

partition=`blkid -L label`

mount $partition


Standard shell scripting. You get the output of a command via backticks, a subshell $(), or many other means.

[vinnie]

Ok, thanks curaga, it work but, to substitutde /dev/... with /mnt/ for ordinary operation on disk?

[vinnie]

Ok, a friend of mine gave me a hand:
mountdir=`blkid -L magipen|sed -e 's,dev,mnt,g'`

thanks to all