Contains the current file position during the reading of a sequential file.
contains the current file position during sequential file reads. If no sequential file read is in progress, $ZPOS
contains 0 (zero).
When you open a file for sequential reads, each READ
from that device sets $ZPOS
to the position within the file at which the next read will occur. The $ZPOS
value is the actual file offset in bytes at the conclusion of a READ
, READ *
, or READ #n
. The user must take appropriate care when reading multi-byte character sets.
The current file position can be set using the $ZSEEK
function. This special variable cannot be modified using the SET
command. Attempting to do so results in a <SYNTAX> error.