expect script failing ...almost works

[dans45]

Hello,
I'm running this script on my linux machine.

#!/bin/bash
# \
exec expect -f "$0" ${1+"$@"}
set password [lindex $argv 1]
spawn passwd [lindex $argv 0]
expect "assword:"
send "$password\r"
expect "assword:"
send "$password\r"
expect eof
When I execute it on my linux machine:
setpw usera apassword
The Retry password request times out.
Can I get some help on this.
Thanks Much.

 

[KenCunningham]

is "assword" a typo or deliberate?

I don't mind people who aren't what they seem. I just wish they'd make their mind up.

 

[dans45]

Hi, It is deliberate. Actually i copied this script exactly a shown from another website. I have not written any of my expect scripts before but I heard it was created just for this purpose i.e. to respond to operator prompts.

 

[Annihilannic]

I use "assword" too as some OS's prompt for "Password" and others for "password".

Incidentally, if this is Linux some of the passwd binaries support the --stdin option, which precludes the need for expect, maybe you should try that first?

Failing that, can you post a copy of the screen output when you actually run the script?

Annihilannic.

 

[KenCunningham]

Interesting, thanks.

I don't mind people who aren't what they seem. I just wish they'd make their mind up.

 

[dans45]

I tried the passwd binary but it did not seem to work. Maybe I ran it incorrectly. I did get the expect script to work by adding some delay.
#!/bin/sh
# \
exec expect -f "$0" ${1+"$@"}
set password [lindex $argv 1]
spawn passwd [lindex $argv 0]
expect "assword:"
time {sleep 5}
send "$password\r"
expect "assword:"
time {sleep 5}
send "$password\r"
expect eof
Not sure why the time delay before the send was required but it works.