topic Re: PGP Shell Script in Operating System - Linux

PGP Shell Script

Michael Treacy — Wed, 25 Jan 2006 16:48:31 GMT

I need to script some batch commands for use with PGP 6.5.8 on our HP/UX. I do not want to save the passphrase anywhere it might be compromised, so I need to have the client be prompted for it. The commands work fine interactively, however I cannot get the prompt to display on the screen when it is run in batch...

How can I redirect stdin to the screen ?

CRYPT
{
$PGPPATH/pgp -esa +batchmode $PGPPATH/tmp/filename herkey -u mykey >>$PGPPATH/pgp_test.log 2>&1 <
}

Thanks in advance

Re: PGP Shell Script

Sandman! — Wed, 25 Jan 2006 16:57:42 GMT

Michael,

Are you scheduling it with either cron or at in batch mode...since processes kicked by either of them have no controlling terminal so the program won't prompt you for a passphrase.

cheers!

Re: PGP Shell Script

Michael Treacy — Wed, 25 Jan 2006 17:02:26 GMT

It would not be scheduled through cron or at, but initiated by a user in front of terminal.

Re: PGP Shell Script

Jeff_Traigle — Wed, 25 Jan 2006 17:11:19 GMT

When you say it works interactively, you mean the following works?

$PGPPATH/pgp -esa +batchmode $PGPPATH/tmp/filename herkey -u mykey

The way you listed the execution in your script, you are redirecting stdout and stderr to the log file. If you want stdout to also appear on the screen (which should display the prompt), you can use the tee command:

$PGPPATH/pgp -esa +batchmode $PGPPATH/tmp/filename herkey -u mykey 2>&1 | tee -a $PGPPATH/pgp_test.log

Re: PGP Shell Script

David Bellamy — Wed, 25 Jan 2006 18:27:23 GMT

Michael why don't you declare a variable for the passphrase before you issue the pgp command.

Re: PGP Shell Script

Michael Treacy — Wed, 25 Jan 2006 22:22:38 GMT

tee is a beautiful thing...
THANKS !!!

Re: PGP Shell Script

Michael Treacy — Wed, 25 Jan 2006 22:25:57 GMT

$PGPPATH/pgp -esa $PGPPATH/tmp/filename herkey -u mykey |tee -a $PGPPATH/tmp/pgp_test.log