unix script

[Jade Bulante]

I'm writing a unix script that starts up a program called pgp. When it starts up it asks me a question that I would want to answer "yes" all the time. Can you help me??

[James R. Ferguson · Accepted solution]

Hi Jade:

I'm going to assume that the program does a "read" looking for the "yes" response. In that case, put "yes" into a file and redirect that file, like this:

# ./mything < ./myresponse

...JRF...

[A. Clay Stephenson]

Hi:

I don't suppose it could be as simple as
echo "yes" | command

If you have more than one line you could build a tempfile
echo "yes" > /tmp/yn
echo "no" >> /tmp/yn
echo "exit" >> /tmp/yn

command < /tmp/yn
rm /tmp/yn

Clay

[A. Clay Stephenson]

Hi Jade:

PGP usually allows the '--batch' option which suppresses all interacxtive input. This may fix you.

Clay

[Joseph C. Denman]

you could try:

/what/ever/dir/pgp << EOF
yes
EOF



...jcd...

[Jade Bulante]

I tried the steps you guys gave me but pgp is still waiting for a "yes" response.

I tried all of them.
It's asking "do you want to use this public key?" and I need a "yes" response.

[Joseph C. Denman]

This is not a gui program is it?

All of these response should have worked.

Exactly how are you starting the program?

...jcd...

[Satish Y]

Your script may need multiple responses...

try with:

/dir1/pgp << !
yes
yes
!

you may use multiple "yes", there is no harm...

Cheers...
Satish.

[A. Clay Stephenson]

Hi Jade:

The fundamental problem is that this input is not coming from stdin but another file descriptor. You could probably use lsof to determine the fdes and then within the shell do an exec 4
But a better way is to use the correct options for pgp. This site contains the documentation you need and in particular how to run pgp in an automated environment:
http://www.gnupg.org

[Jade Bulante]

I'm starting the program by calling a script called script:
In that script file is the following

pgp -e filename username

This geberates the question that I have to answer with a "yes".