EXPECT Utility

[Krishna]

Hi,

I am trying to pass a password which is having special characters like
$$.

If I pass a password like "test$$12" as a new password, the program
cannot able to set the password as "test$$12". How to nullify the
special meaning of "$$" while passing the argument. Here is my
program.

#!/usr/bin/expect -f

spawn /usr/bin/passwd

set oldpas [lindex $argv 0]
set newpas [lindex $argv 1]

expect "Old password:"
send "$oldpas\r"
expect "New password:"
send "$newpas\r"
expect "new password:"
send "$newpas\r"
expect eof

Thanks in advance for your help.

Best Regards
Siva.

[Todd H.]

[email]haisiva@yahoo.com[/email] (Krishna) writes:

> Hi,
>
> I am trying to pass a password which is having special characters like
> $$.
>
> If I pass a password like "test$$12" as a new password, the program
> cannot able to set the password as "test$$12". How to nullify the
> special meaning of "$$" while passing the argument. Here is my
> program.

I haven't used expect, but if it's like shell scripting, try ${oldpas}
as the reference instead of $oldpas.

This avoids this very problem in the shell scripting world, and may
well work for you.

> #!/usr/bin/expect -f
>
> spawn /usr/bin/passwd
>
> set oldpas [lindex $argv 0]
> set newpas [lindex $argv 1]
>
> expect "Old password:"
> send "$oldpas\r"
> expect "New password:"
> send "$newpas\r"
> expect "new password:"
> send "$newpas\r"
> expect eof

--
Todd H.
[url]http://www.toddh.net/[/url]

[RobH]

"Krishna" <haisiva@yahoo.com> wrote in message
news:1d5a6364.0309291159.7adcea73@posting.google.c om...

> Hi,
>
> I am trying to pass a password which is having special characters like
> $$.
>
> If I pass a password like "test$$12" as a new password, the program
> cannot able to set the password as "test$$12". How to nullify the
> special meaning of "$$" while passing the argument. Here is my
> program.
>
> #!/usr/bin/expect -f
>
> spawn /usr/bin/passwd
>
> set oldpas [lindex $argv 0]
> set newpas [lindex $argv 1]
>
> expect "Old password:"
> send "$oldpas\r"
> expect "New password:"
> send "$newpas\r"
> expect "new password:"
> send "$newpas\r"
> expect eof
>
> Thanks in advance for your help.
>

comp.lang.tcl is the NG best suited to this query as Expect uses
embedded tcl.
Mr Libes hangs out there as well.

RobH

[at]

On 29 Sep 2003 12:59:24 -0700, [email]haisiva@yahoo.com[/email] (Krishna) wrote:

>Hi,
>
>I am trying to pass a password which is having special characters like
>$$.
>
>If I pass a password like "test$$12" as a new password, the program
>cannot able to set the password as "test$$12". How to nullify the
>special meaning of "$$" while passing the argument. Here is my
>program.
>
>#!/usr/bin/expect -f
>
>spawn /usr/bin/passwd
>
>set oldpas [lindex $argv 0]
>set newpas [lindex $argv 1]
>
>expect "Old password:"
>send "$oldpas\r"
>expect "New password:"
>send "$newpas\r"
>expect "new password:"
>send "$newpas\r"
>expect eof
>
>Thanks in advance for your help.
>
>Best Regards
>Siva.

When invoking the script and passing your password(s) preceed every
special character with a backslash "\". This will escape the special
characters and send them, intact, to the subscript.

Bob