in reply to print only uppercase sentences
$ echo " HOW ARE YOU =>FINE
How are You=>FINE
HOW ARE You=>FINE" | \
perl -ne'print if /\A[[:upper:][:^alpha:]]+\z/'
HOW ARE YOU =>FINE
There is no Extraterrestrial life
There aren't any suitably capable Extraterrestrials
Interstellar travel is too difficult
We're too uncool / not worth the trouble
What do you mean they haven't visited?
Results (470 votes). Check out past polls.