UniBasic Commands Reference - Rocket Software

OSOPEN
Syntax
OSOPEN filename [READONLY | WRITEONLY] TO file.var [NODELAY]
[ON ERROR statements] {THEN | ELSE} statements [END]
Description
The UniBasic OSOPEN command opens a sequential file that does not use
CHAR(10) as the line delimiter.
Read/write access mode is the default. Specify this access mode by omitting
READONLY and WRITEONLY.
Tip: After opening a sequential file with OSOPEN, use OSBREAD to read a block of
data from the file, or OSBWRITE to write a block of data to the file. You also can use
READSEQ to read a record from the file, or WRITESEQ or WRITESEQF to write a
record to the file, if the file is not a named pipe. (READSEQ, WRITESEQ, and
WRITESEQF are line-oriented commands that use CHAR(10) as the line delimiter.)
Note: On UniData for Windows Platforms only: When you use OSOPEN, UniData
uses the open function to open files in binary mode, but does not convert NEWLINE
[CHAR(10)] delimiters to CARRIAGE RETURN–NEWLINE pairs [CHAR(13) and
CHAR(10)] as the OPENSEQ command does.
OSOPEN 1-558