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put system(); output into my $variable -- chech for installed aplications
You have to use backtictks (``) or qx// to get the result and store the same in a variable. See about them in perlop and perlfunc.
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
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