Howto Convert Text File From UTF-8 to ISO-8859-1 Encoding
Convert a iso-8859-1 charset file into a utf-8 charset file.
# iconv –-from-code=ISO-8859-1 –-to-code=UTF-8 iso.txt > utf.txt
You can also use the console command recode
# recode UTF-8 filename.txt
Remember to make a backup of the file, because the changes are being done in the target file.