Re: How to capture log from external interactive process

If you are shell scripting on a Unix box, and your system call is tantamount to that, the exit code/return value of the command-just-run is stored in the variable '$?'. Perl does a similar thing with this variable. NOTE: because it changes every time a child process is run, if you want to preserve this value, you need to save it off, a la this shell sniplet:

rc=$?
if [[ ${rc} -ne 0 ]]; then
  echo "cp -i $file1 $file2 failed with a value of ${rc}"
fi
[download]

Hope this helps.

--
tbone1, YAPS (Yet Another Perl Schlub)
And remember, if he succeeds, so what.
- Chick McGee

Comment on Re: How to capture log from external interactive process Download Code

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Re^2: How to capture log from external interactive process by sintadil (Pilgrim) on Sep 17, 2004 at 14:30 UTC
`rc=$? if [[ ${rc} -ne 0 ]]; then echo "cp -i $file1 $file2 failed with a value of ${rc}" fi` [download] Thank you for reminding me of why I shall never, ever learn shell scripting and shall forever stick with Perl. :)	[reply] [d/l]
Re^3: How to capture log from external interactive process by LessMonk (Initiate) on Sep 17, 2004 at 14:44 UTC
Thanks for your help guys, but I'm still stumped. Script may well work but I need to do all this from a perl script. 1) execute external program from perl 2) using perl or shell scripting magic, log the programs output and user input 3) use perl to check the exit status of the program I've tried using perl's open3, but then stdout/stderr/stdin all get piped to perl :(	[reply]