Name
sysread
Synopsis
sysread filehandle, scalar, length, [offset]
Reads length bytes of
data into variable scalar from the
specified filehandle. The function
returns the number of bytes actually read, or 0 at end-of-file. It returns the
undefined value on error. scalar will
grow or shrink to the length actually read. The
offset, if specified, says where in the
string to start putting the bytes so you can read into the middle
of a string that’s being used as a buffer. You should be prepared
to handle the problems (such as interrupted system calls) that
standard I/O normally handles for you.
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