removing multibyte characters from a file using sed

i need to remove all multibyte characters from a file, i dont know what they are so i need to cover the whole ra开发者_如何学运维nge.

I can find them using grep like so: grep -P "[\x80-\xFF]" 'myfile'

Trying to do a simular thing with sed, but delete them instead.

Cheers

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Give this a try:

LANG=C sed 's/[\x80-\xFF]//g' filename

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you can use iconv to convert from one encoding to another