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Get the output from EXPECT ?

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# 1  
Old 11-23-2006
Get the output from EXPECT ?
I'm using expect script, but don't know how to assign an output to a string variable. Any help ?
Thank you for reading!

PS:
In fact i want to get the out put of expect when run grub-md5-crypt to generate MD5 password for GRUB boot loader.
My code:
Code:
#!/bin/sh
#\
exec expect -f "$0" ${1+"$@"}
set password 123456
set timeout 5
spawn grub-md5-crypt
expect "asspword:"
send "$password\r"
expect "passpword:"
send "$password\r"
expect eof

And i want to assign the MD5-password out put to a string variable in my scriipt to write to a file.
Any ideas?
Last edited by fongthai; 11-23-2006 at 05:26 AM..
# 2  
Old 11-23-2006
are you sure that "exec expect" will invoke the expect processor ?
Why don't you try the script with "which expect" and replace the value at the start of the script ? Also let us know what are the error messages ( if any ).
# 3  
Old 11-23-2006
Hi sysgate,

The script above work fine! No error message. But I want to get it output. In other word, it will generate a MD5 string and I just want to catch that string to a variable or a file.
Like we have echo "Helllo" > output_file.txt.
Can we ?
# 4  
Old 11-24-2006
Why don't you try something like :
Code:
exec grub-md5-crypt your-filename >& md.sum

Let me know if this works, because I don't have the proper machine to test the "grub-md5-crypt" function.
I have in one of my scripts something like :
Code:
set md "md5sum"
#call md5 sum
exec $md my-file >& md.sum
puts "md5sum of my-file generated and stored"

# 5  
Old 11-24-2006
Hi,
it does not work!
grub-md5-crypt is usedn to encrypt a password.
You will be ask for a password, then it outout the MD5 string for you.
This is used for /etc/grub.conf when we enable GRUB boot loader password.

Code:
$ grub-md5-crypt
Password:
Retype password:
$1$0Ek4j1$pG3YRuO7fDb/xZ1ebpbKq.

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