How to replace Unicode characters with ASCII

Question

I have the following command to replace Unicode characters with ASCII ones.

sed -i \'s/Ã/A/g\'

The problem is Ã isn\'t recognized

Answer 1

It is possible to use hex values in "sed".

echo "Ã" | hexdump -C
00000000  c3 83 0a                                          |...|
00000003

Ok, that character is two byte combination "c3 83". Let's replace it with single byte "A":

echo "Ã" |sed 's/\xc3\x83/A/g'
A

Explanation: \x indicates for "sed" that a hex code follows.