Pen said:
in my linux comsole:
ghex2 /home/pt/myday
there is the first line content
AA3F3201861F0000D61F0000
would you mind to tell me how can convert it into utf-8?
What do you meant "convert to utf-8"?
Those hex characters are very unlikely to be UTF-8. See
http://en.wikipedia.org/wiki/UTF-8
AA = second, third or fourth byte of multi-byte sequence
3F = single-byte character (?)
32 = single-byte character (2)
01 = single-byte character (ctrl-A)
86 = second, third or fourth byte of multi-byte sequence
1F = single-byte character (ctrl-?)
... etc
Apart from D6 there are no "start of n-byte sequence" characters
Try typing "file /home/pt/myday", which will attempt to identify what
sort of file you actually have.