CODEWITHSUNDEEP
bashexpect
achille
achille

Reputation: 113

Feed expect with some variables

I would like to use expect with cryptsetup. It could be whatever program instead of cryptsetup. I feed cryptsetup with a device, a virtual device name and a password.

#!/bin/bash 

read -p "Device: `echo $'\n> '`" DEV
read -p "Virtual Device: `echo $'\n> '`" VIRTUAL
read -p "Password: `echo $'\n> '`" PSWD

expect -c exec /sbin/cryptsetup luksOpen /dev/$DEV $VIRTUAL
expect "Enter passphrase for /dev/sdc1:"
send $PSWD

I also tried with 'spawn' but it does not work either. any idea is more than welcome! thanx folks.

Upvotes: 0

Views: 117

Answers (2)

M.Liscio
M.Liscio

Reputation: 737

You can overcome the expect dependency by substituting the last three lines of codes with the following :

echo $PSWD | cryptsetup luksOpen /dev/$DEV $VIRTUAL

Upvotes: 1

komar
komar

Reputation: 881

As I understand you question and comments, you need something like this:

#!/bin/bash 

read -p "Device: `echo $'\n> '`" DEV
read -p "Virtual Device: `echo $'\n> '`" VIRTUAL

/sbin/cryptsetup luksOpen /dev/$DEV $VIRTUAL

mount  /dev/mapper/$VIRTUAL /mnt/$DEV

cryptsetup will ask you password, you will enter it. After this mount will run. That's all. And you don't need expect and any variable to store password.

Upvotes: 0

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