Answer / smita

print caller;

What is the difference between exec and system?

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What is the difference between having a parenthesis after module name and without parenthsis after module name?? i.e Package::Module(); and Package::Module;

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What is the difference between use and require in perl programming?

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Explain lists in perl?

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Where the command line arguments are stored and if you want to read command-line arguments with Perl, how would you do that?

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What are the arguments and what do they mean in perl programming?

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How to get help for perl?

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What are the various perl data types based on the context?

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How to prevent file truncation in perl?

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my @array=('data1','data2'); my @array1=('data1','data2'); my ($i,$k); $i=7; $k=7; while($i){ $array [++$#array] = 'ree'; $i--; print "@array"; } while($k){ push(@array1,'ree'); $k--; print "@array1"; } Are these two while loop are doing the same functionality ? What may be the difference?

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Explain cpan?

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How do you give functions private variables that retain their values between calls?

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