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using ssh change password remotely?


 
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# 1  
Old 09-26-2007
using ssh change password remotely?

Is it possible to change the password using a shell script, I want to remotely connect to a computer and then change password without manual intevention.

Thanks in Advance
Rishi
# 2  
Old 09-26-2007
I reckon so but you may have to be cunning with allocating virtual terminals.
# 3  
Old 09-26-2007
for instance I tried

ssh -T $IP "passwd oracale"

but unfortunately this prompts for new password, which i dont want and I want to pass the new password as argument to script itself.
# 4  
Old 09-26-2007
You need the far end to allocate a virtual terminal and pass the password in stdin.
# 5  
Old 09-26-2007
you can use expect's passmass script, or construct more simple one like :

Code:
#!/usr/bin/expect

set timeout -1
spawn ssh@host
expect "password:"
send "the-pass-goes-here\r"
sleep 1
spawn passwd [lindex $argv 0]
set password [lindex $argv 1]
expect "password:"
send "$password\r"
expect "password:"
send "$password\r"
expect eof
exit

This will, however, pose a security risk, by enclosing password in plain file.
I copied this example from http://floppsie.comp.glam.ac.uk/Glam...ripting/5.html, you will find great examples of Expect and scripting explanation.

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