in reply to
using system function we can achieve this.
See the following example code.
#system("cat help_file | less");
#system("echo "this is help file"|less");
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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