topic Re: called a script within a script that requires a response in Operating System - Linux

called a script within a script that requires a response

f. halili — Thu, 08 Feb 2007 14:41:34 GMT

Hello,

I'm calling a script in my scipt and the script I called is asking me "Are you sure y/n". In my script since I don't have to manually intervene, I want to automatically take "Y" for my answer. How can I put "Y" on my script?

thanks,
f. halili

Re: called a script within a script that requires a response

OldSchool — Thu, 08 Feb 2007 14:48:27 GMT

say your calling script "two", do this:

two <Y
EOF

man sh-posix and look at "hear" documents. Note, the "EOF" can be anything you want, but *must* be left-justified

Re: called a script within a script that requires a response

Patrick Wallek — Thu, 08 Feb 2007 14:48:38 GMT

Something like this in script1:

/path/to/script2 << EOF
Y
EOF

Please note that the EOF MUST start at the beginning of the line, UNLESS you do '<<-' then you can TAB over, NOT SPACE, to position EOF.

Re: called a script within a script that requires a response

OldSchool — Thu, 08 Feb 2007 14:49:56 GMT

note - I said "hear" docs...should be "here" docs...

Re: called a script within a script that requires a response

James R. Ferguson — Thu, 08 Feb 2007 14:52:39 GMT

Hi:

# cat script1
#!/usr/bin/sh
echo "running..."
echo "YES!" | script2
echo "done"

# cat script2
#!/usr/bin/sh
read REPLY
echo "You said ${REPLY}"

# ./script1
running...
You said YES!
done

Regards!

...JRF...

Re: called a script within a script that requires a response

A. Clay Stephenson — Thu, 08 Feb 2007 14:52:43 GMT

If you can anticipate all the responses, then all you need to do is create a file and redirect stdin or use a pipe.

echo "Y" | myscript.sh

Now when faced with more complicated choices (ie the questions change with varying conditions), that becomes the role of the expect utility.
http://hpux.its.tudelft.nl/hppd/hpux/Tcl/expect-5.43/

But for your simple case, reading from a file or pipe should suffice.

Re: called a script within a script that requires a response

f. halili — Thu, 08 Feb 2007 16:06:42 GMT

THANKS EVERYONE!