RE: passing a password

Jeff Hardy wrote:
> I have a quick question.  I am writing a script that calls a little C
> program (in this case, the cups utility cupsaddsmb).  I call the
> program with no problem using a system call like so:
> 
> system("/usr/sbin/cupsaddsmb -U admin $queue");
> 
> $queue is the printer i want to add.  The problem is that the
> cupsaddsmb utility prompts for a password.  How can I send that
> password along to the program?  I tried making my system call with a
> pipe to an echo password like this: 
> 
> system("/usr/sbin/cupsaddsmb -U admin $queue | echo password");

This is backwards. If cupsaddsmb reads the password from stdin, you can pass
it as:

   system("echo password | /usr/sbin/cupsaddsmb -U admin $queue");

However, it probably reads the password from /dev/tty, so the above
technique won't work. If cupsaddsmb doesn't support an alternate way of
providing the password, you need to use something like the Expect module,
which lets you control the program through a pseudo tty.

• passing a password by Jeff Hardy
• RE: passing a password by Bob Showalter
• RE: passing a password by Kipp, James
• RE: passing a password by Jeff Hardy
• Re: passing a password by Jeff Westman