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read - fixed-length buffered input from a filehandle |
read - fixed-length buffered input from a filehandle
read FILEHANDLE,SCALAR,LENGTH,OFFSET
read FILEHANDLE,SCALAR,LENGTH
Attempts to read
LENGTH bytes of data into variable
SCALAR from the
specified
FILEHANDLE. Returns the number of bytes actually read, 0
at end of file, or undef if there was an error.
SCALAR will be grown
or shrunk to the length actually read. If
SCALAR needs growing, the
new bytes will be zero bytes. An
OFFSET may be specified to place
the read data into some other place in
SCALAR than the beginning.
The call is actually implemented in terms of stdio's fread(3) call.
To get a true read(2) system call, see sysread.
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read - fixed-length buffered input from a filehandle |