Linux scripting: simple bash script

silos · 10-29-2009, 02:49 AM

Here is my script (named "tc-workaround"):

Code:

#!/bin/bash

echo "TrueCrypt NTFS read-write workaround 1.0"
echo "Enter the name of the NTFS-formatted file/device:"
read device
echo "Is this a system-volume (y/n)?"
read system
if [ "$system" = "y" ]; then $system = "-m system "
else
$system = ""
fi
truecrypt $system--filesystem=ntfs-3g --fs-options force --mount "$device"

and the output is:

Code:

TrueCrypt NTFS read-write workaround 1.0
Enter the name of the NTFS-formatted file/device:
/dev/sda3
Is this a system-volume (y/n)?
y
./tc-workaround: line 8: y: command not found

What have I done wrong?
system: Debian 5.0.3 (Lenny, stable)

ghostdog74 · 10-29-2009, 02:59 AM

when you assign values to variables, there should not be a $ infront of the name. also, spaces not allowed between = sign during variable assignment.

xaler · 10-29-2009, 03:16 AM

Quote:

Originally Posted by silos

Code:

.....
then $system = "-m system "
........

I changed your code and tried in cygwin

Code:

.....
then system="-m system "
........

No problems in the output... notice the change...

silos · 10-29-2009, 05:38 AM

So here is the final version of my script.
Maybe it will help somebody.
It allows to mount NTFS-formatted TrueCrypt volumes on Debian in read-write mode which is impossible by default.

Code:

#!/bin/bash

echo "TrueCrypt Debian NTFS read-write workaround 1.0 by Silos"
echo "Enter the name of the NTFS-formatted TrueCrypt device or file,"
echo "for example /dev/sda1 or file.tc:"
read device
echo "Is this a system-volume (y/n)?"
read system
if [ "$system" = "y" ]; then system="-m system "

else
system=""
fi
truecrypt $system--filesystem=ntfs-3g --fs-options=force --mount $device

It requires the ntfs-3g package and of course the TrueCrypt.