Shell Programming and Scripting

Hello,
I have a large file in UTF8 format with around 200 thousand plus strings which have a large number of scripts (code-blocks/code-pages).
I need to extract from the file only the following:
All strings having basic Latin characters: 0021-007E
All strings in the Devanagari range: 0900 to 097F
Has someone written a script in PERL or AWK to handle this. I do not want to reinvent the wheel and hence the request.
Many thanks in advance. I have never tried character identification in PERL or AWK and hence the request.

Well, utf8 turns on all the character's bytes high bit for all characters above 7F: http://en.wikipedia.org/wiki/UTF-8

Hello,
Many thanks for the help.
I have written a PERL script which sorts but I cannot define a range within the script. I have to literally feed in the characters:
$in =~ tr<abcdefghijklmnopqrsštuuvwxyz><\x01-\x1C>
Same for Devanagari, which is not a good idea.
Moreover Perl does not accept UTF8 chars even when I invoke use UTF8 within the perl program and that has left me stumped and hence the request for someone who can help me pipe out the two code page ranges.

ord - perldoc.perl.org can take a byte or unicode wide characer into an integer, and chr - perldoc.perl.org the reverse. However, it looks like PERL will handle the grisly bit details for you if you follow the caveats (Latin for warnings): perlunicode - perldoc.perl.org Just be careful when you are reading about byte arrays and character arrays, that they are sometimes synonyms and sometimes not. Sane handling for UTF8 is to convert it to an array of 16/32 bit unsigned integer characters. (I do not know of any language that needs 64 bits, and UNICODE started out with 65K glyphs, but other Asian handlers had up to 32 bit characters! Extended Char Intro - The GNU C Library )

The wiki on Devanagari seems to be missing some glyphs! http://en.wikipedia.org/wiki/Devanagari