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if you like to solve crossword puzzle to kill your time but sometimes you are stuck with what word you should put in

here's a quick example on how to do that in your terminal

example clue the entire CPU of a computer on a single integrated circuit (chip)

and we have crossword like this

_,_,_,r,_,p,_,_,_,_,_,_,_,r

now using common word list table we can easily solve this by

grep -e ^...r.p.......r$ /usr/share/dict/words

note: empty space (_) was replaced by dot (.) notation

also make sure you have the word list package installed

sudo apt-get install wamerican