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FOPEN |
CMS specifics: | You must close FOPEN files with the FCLOSE function |
Syntax | |
Details | |
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Syntax |
FOPEN (fileref <,open-mode <,record-length <,record-format>>>) |
A | APPEND mode allows writing new records after the current end of the file. |
I | INPUT mode allows reading only. (default) |
O | OUTPUT mode defaults to the OPEN mode specified in the host option in the FILENAME statement or function. If no host option is specified, it allows writing new records at the beginning of the file. |
S | Sequential mode can be used for pipes and other sequential devices such as READER. |
U | UPDATE mode allows both reading and writing. |
B | data are to be interpreted as binary data. |
D | use default record format. |
E | use editable record format. |
F | file contains fixed length records. |
P | file contains printer carriage control in host-dependent record format. |
V | file contains variable length records. |
Details |
Under CMS, you must close files that you open with FOPEN using the FCLOSE function at the end of a DATA step; files are not closed automatically after processing.
See FINFO for an example that demonstrates the use of the FOPEN, FCLOSE, FINFO, FILENAME, FOPTNAME and FOPTNUM functions.
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Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.