Execute Unidata Process from the shell command lines?

Question

Is it possible to execute the Unidata process from the Unix Command line??

If it's possible, can anyone please let me know how to??

I just want to add some Unidata Processes into the shell script and run it from the Unix

Cron job.

Unidata Process

Unix Command line

Answer 1

Yes! There are several approaches, depending on how your application is setup.

1. Just pipe the input to the udt process and let 'er rip

$cd /path/to/account
$echo "COUNT VOC" | udt

This will run synchronously, and you may have to also respond to any prompts your application puts up, unless it is checking to see if the session is connected to a tty. Check the LOGIN paragraph in VOC to see what runs at startup.

2. Same, but run async as a phantom

$cd /path/to/account
$udt PHANTOM COUNT VOC

This will return immediately, the commands will run in the background. Have to check the COMO/PH file for the output from the command. It's common for applications to skip or have a cut down startup process when run as a phantom (check for @USERTYPE)

3. If none of the above work because of the way your application is written, use something like expect to force the issue.

spawn udt
expect "ogin:"
send "rubbleb\r"
etc.

https://en.wikipedia.org/wiki/Expect for more info on expect