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Re: File Test operators, option -T

by zork42 (Monk)
on Sep 12, 2013 at 02:53 UTC ( #1053642=note: print w/replies, xml ) Need Help??


in reply to File Test operators, option -T

Do you have the following near the start of your script?
use strict; # essential use warnings; # essential use autodie; # optional use diagnostics; # optional
The 2 "essentials" catch lots of errors and will save you lots of time. You should always use them!
If you'd had them in your script you'd have got this error message:

-T on closed filehandle $fh at script_name.pl line 2.

The 2 "optionals" can be very useful.
eg use autodie; would have given you this error message:

Can't open 'input2.txt' for reading: 'No such file or directory' at script_name.pl line 1

Documentation:
  • strict - Perl pragma to restrict unsafe constructs
  • warnings - Perl pragma to control optional warnings
  • autodie - Replace functions with ones that succeed or die with lexical scope
  • diagnostics - produce verbose warning diagnostics

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[mark4]: Do you h=know how I can get pp.exe? Is there a module I can install that includes this?
[marto]: I always found Strawberry Perl on windows to be a much better environment, made life much easier
[marto]: pp. install it like you would any other module
[marto]: it probably exists in one of the PPM repositories
[marto]: failing that see the README
[mark4]: I installed "PAR" from the ppm install window. pp.exe. did not show up.
[marto]: it should just be a script, pp, or on windows pp.bat, post install you should just be able to call pp -x packed.exe source.pl as the PPM package should put everything required into the appropriate path
[marto]: ah, some time ago pp became it's own package, try searching your repo for PAR::Packer
[marto]: again, Strawberry + cpanm for the win: cpanm pp to install

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