In CPAN module, name an instance you use.

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Explain '->' in perl?

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How to code in perl to implement the tail function in unix?

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Differences between die and exit.

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What does the’$_’ symbol mean?

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while(my($key, $value) = each(%hash) ) { print "$key => $value\n"; } my($key, $value); while(($key, $value) = each(%hash) ) { print "$key => $value\n"; } What is the different between these two code in case of "my" usage ?

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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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How would you replace a char in string and how do you store the number of replacements?

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How do I read command-line arguments with Perl?

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How to read from a pipeline with Perl

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How can arrays be tied?

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What value is returned by a lone `return;’ statement?

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