Hi all,
when I run the following script.pl script with no arguments:
./script.pl
I do not get the message No arg. Why? How to identify if $param is a null value or empty value, same as [ -z from ksh?
#!/usr/bin/perl
my $param = $ARGV[0];
if ($param = "") {
print No arg;
} else {
print arg: $param;
}
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Tags: null value, param argv, pl script, usr bin
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[...] perl + identify if param is empty value from ARG | The Largest … [...]
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[...] perl + identify if param is empty value from ARG | The Largest … [...]
[...] perl + identify if param is empty value from ARG | The Largest … [...]
[...] perl + identify if param is empty value from ARG | The Largest … [...]
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