print to a file

[sswanstr]

I have a perl script that works great and prints the output to the console screen. However, if I try to redirect the output on the command line, nothing gets printed to the file. I tried modifying the script to print to a file instead of the screen but get the same results (nothing in the output file). Any suggestions as to what might be going on?

 

[brigmar]

Permissions.

 

[sswanstr]

permissions isn't the issue. Before attempting to write to the file I touch it and chmod it to 777:

system("touch image_report.out");
system("chmod 777 image_report.out");
open (OUTFILE, '>>image_report.out');

 

[ChrisHunt]

If your program doesn't have permission to write to a file, it won't have permission to chmod it either.

-- Chris Hunt
Webmaster & Tragedian
Extra Connections Ltd

 

[sswanstr]

I am running the script as root on the server so there is no issue with permissions.

That being said I let the script run to completion this time and it looks like it dumps all the output to the file at the same time once the script completes. Though when I run it normally it prints stuff to the screen in bursts.

 

[brigmar]

With no code, the question is a little vague, hence the short answer.

Do you have strict and warnings set in your code ?
Are you checking to see if the file is opened successfully? ( open "image_report.out" or die ? )

That you can't redirect STDOUT to the intended file from the command line seems to be the real issue.
It says to me that the file cannot be created/appended to, hence permissions (or quotas).
Either that or the script is producing no output to STDOUT.

 

[brigmar]

Well that sounds more like a buffering issue.

http://perldoc.perl.org/perlfaq5.ht...er-an-output-filehandle?--Why-must-I-do-this?

 

[travs69]

Is the output that you are seeing on the screen stuff you are printing.. or stuff coming from STDERR from system calls?

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Travis - Those who say it cannot be done are usually interrupted by someone else doing it; Give the wrong symptoms, get the wrong solutions;

 

[max1x]

based on the code you have provide above, you need to show if this is inside a loop -- to clarify "bursts of data on screen".