bash - remove improper words

I have a file with bunch of words in which many of them don't make much sense such as 'completem开发者_如何学Goakes' or even #s mixed with letters/words. What I need is to use a tool to spell check them, if it exists on the dictionary leave it, if not delete it.

What would be a good way of doing this in bash?

Thanks

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You can script Aspell.

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I had some fun with getting a single quote character in here, but hey, it should be as hard to read as it was to write, right? (assuming your words are listed in words.txt)

awk 'system("grep -i -q " "'"'"'^"$0"$'"'"'" " /usr/share/dict/words") == 0 {print $0};' words.txt