Converting unknown charset file to UTF-8

iconv

I had a dataset but it was not UTF-8. So, I had to find out which charset was being used. 'file' command didn't helped me out.

$ file file_name.csv 
file_name.csv: Non-ISO extended-ASCII C++ program text, with very long lines, with CRLF line terminators 

So, I made this bash script to figure out its encoding:

First, I converted the file to every single format available by 'iconv':

$ for f in $(iconv -l); do echo "Convertendo $f ..."; iconv -f $f -t UTF-8 < file_name.csv > fil_name.$f.csv; done

The, I searched for the file name containing some known word:

$ IFS=$(echo -en "\n\b") ; for i in $(grep -Hi "são\ paulo" *); do echo $i | awk '{print $1}'; done

this answer could be useful for someone