Answer Posted / ramesh

Both Perl's exec() function and system() function execute a
system shell command. The big difference is that system()
creates a fork process and waits to see if the command
succeeds or fails - returning a value. exec() does not
return anything, it simply executes the command. Neither of
these commands should be used to capture the output of a
system call. If your goal is to capture output, you should
use the

$result = system(PROGRAM);
exec(PROGRAM);

Which of these is a difference between Perl and C++ ?

964

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Explain perl. When do you use perl for programming? What are the advantages of programming in perl?

824

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How to read multi lines from a file in perl?

870

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Explain lists ?

881

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Why Perl aliases are considered to be faster than references?

896

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Mention the difference between die and exit in Perl?

1040

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Explain the meaning of closure in perl.

953

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What does a die() function do in perl?

931

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What is the difference between use and require in perl?

806

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How to create a package?

894

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Explain the meaning of perl one-liner?

998

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What happens to objects lost in "unreachable" memory, such as the object returned by Ob->new() in `{ my $ap; $ap = [ Ob->new(), $ap ]; }' ?

926

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What is qq (double q)operator in perl?

965

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What are the different ways to run cgi?

908

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What does this symbol mean '->'?

916

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