topic filename changes before previous command finishes- BL870c in Operating System - HP-UX

filename changes before previous command finishes- BL870c

Larry J. Griswold — Wed, 20 Oct 2010 16:31:44 GMT

We have a Bl870c server running HP-UX 11iv2, a Oracle Database server. The attached shell script pulls a file in from a sftp server and processes the file.

The mv command to rename the file seems to execute before the previous awrun command can finish.

My assumption is that the awrun command is running on a different CPU than the mv command.

Is there a way to make shell script wait for the previous command to finish before another?

We put a sleep 10 command and it works fine.

Should we put a if [ $? = 0 ] then mv

Re: filename changes before previous command finishes- BL870c

James R. Ferguson — Wed, 20 Oct 2010 16:50:43 GMT

Hi:

Normally, commands in a script are simply executed synchronously so that nothing begins until the previous command (process) has completed (successfully or not).

You don't say what the 'awrun' process is doing or how it is coded. If it does something like a fork() to perform work, your shell script resume execution before the work is completed.

If the simple sleep() works, you could continue to use that. If the 'awrun' returns a useful return code, then, yes, I would test it and do the 'mv' accordingly, too.

Regards!

...JRF...

Re: filename changes before previous command finishes- BL870c

Dennis Handly — Wed, 20 Oct 2010 17:46:14 GMT

>Should we put a if [ $? = 0 ]

The proper syntax (integer compare) is: [ $? -eq 0 ]