umount cdrom

[YOGI_3]

Hello all..
I am using Linux...
I am not able to unmount /dev/mnt/cdrom by normal user.
I am able to do this by root user.
How can i umount cdrom through normal user.

Thanks,
Yogeshg

[Robert-Jan Goossens · Accepted solution]

Hi,

Install and configure a tool like sudo for linux.

http://www.linuxhelp.net/guides/sudo/

Best regards,
Robert-Jan

[Muthukumar_5]

umount can be executed only by root user (super user). You have to set up sudo or expert scripting to give executable permission for umount command.

Make a script like,

#!/bin/ksh
# unmount
sudo umount /dev/mnt/cdrom
#

Give the permission to normal users.
$ unmount
will umount cdrom

hth.

[YOGI_3]

is there any other way than SUDO

[Muthukumar_5]

One more simple but not secured one.

#!/bin/ksh
#unmount
(
echo "root"
sleep 2
echo "passwd of root account"
sleep 2
echo "umount /dev/mnt/cdrom"
sleep 1
echo "exit 0"
) | telnet localhost
#

Save this file in /usr/bin/ location with 555 permission using bin:bin user:group. setting.

PS: root password will be readable to normal user. You can use expect scripting to make encrypted passwd setting.

Setuping sudo is best.

[Piergiacomo Perini]

Hi Yogeshg,

without sudo maybe you can
test using sticky bit on the
first script that Muthukumar
suggest.
(i don't know if can be hard change)

regards
pg