> -----Original Message-----
> From: Sambamoorthy Jayaraman [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, July 26, 2001 2:32 AM
> To: [EMAIL PROTECTED]
> Subject: Reading binary files
>
>
> Hi,
>
> How do I read a binary file?? From this file, I need to read
> 16 bit values.
> I have attached a sample binary file alongwith. When you are
> reading this
> file, enable `hex edit mode'.
You need to use the unpack() function.
perldoc -f unpack
Things to watch out for:
Some evil systems (Windows) have a "text" and "binary" file concept. On
Unix, this is not relevant. See
perldoc -f binmode
To read fixed length records, see
perldoc -f read
perldoc -f sysopen
perldoc -f sysread
If the file is created on a different architecture, byte ordering may be
different. So a two-byte integer written by an HP PA-RISC (big endian)
system would be interpred wrong when ready by an Intel-based (little endian)
system.
perldoc perlport (search for "endian")
There are also some FAQ's related:
perldoc -q binary
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