Hello all,

I am trying to use backticks like so: my @result = `command --arg1=$num1 --arg2=file.log  . . . -argLast=$numLast`;

I can see from the log file that the command is processing and on some occaisions I have even seen the log file say the command was finished, however the rest of my perl script does not run, instead the command starts to run again.

I was thinking about adding something like exit if $?=0 inside of the backticks to force the script to move on, but I think this not quite right. I've read that backticks are supposed to hand over control to the parent script after it runs so I really don't even want to force it to continue.

Any thoughts on what might be going on?

I'm sorry for asking such a basic question and vague questions. I will try to provide any details you would like. But unfortunately I didn't write all of this code, and it is sort of privately owned, so I can't exactly put up the code verbatim.

Thanks very much.

Thank you all so much for your help. I figured out what was wrong thanks to, Anonymous-Monk (01:34 UTC).

It turns out there was a for loop in my code. It was about 500 lines up. I did not notice it before beacuse the original perl script that I am manipulating called an old suite of C programs that we no longer use. Using the old stuff each loop finished in 2-5 seconds. Now that we make calls to a new set of C code each for loop takes 2000s. This is certainly not an improvement and something else I have to look into.

Thank you again.

In reply to Backtick caught in infinite loop by tau1777

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