hi,

I have a situation where we need to analyse logs that vary in size. If they are small, printing them out to screen is perfectly fine. However, if they are large, I intend to pipe/redirect (not sure of the correct terminology) the script output into a file.

E.g. For small files: 
perl script.pl

[download]
For Large files 
perl script.pl > logdump.txt

[download]

The problem (as I see it) is that I'm not sure how to test whether STDOUT is attached to the terminal console, or the shell filehandle. Once I know how to test if STDOUT is or isn't attached to the terminal, I can then set a threshold so that the script doesn't print out to the console 100,000's lines of text...

But if Perl is oblivious to whats happening to STDOUT I'll devise another workaround.
Thanks in advance

In reply to Test if STDOUT is attached to console or shell redirected filehandle by desemondo

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