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--- jvs:fscan:manual:chapter2:writeover [2012/06/05 15:04]
voyvodic
+++ jvs:fscan:manual:chapter2:writeover [2023/02/23 18:43] (current)
@@ Line 1: / Line 1: @@
 **fScan Reference Manual, Chapter 2 (CmdLineOptions): writeover**
-===== Writeover -- Write flag=====
+===== Writeover -- Temporarily set file overwrite flag=====
-**usage: -writeover**
+**usage:**\\
+ ** -writeover**\\
+ ** -w**
-The WRITEOVER option (-w) is used to allow an existing data file to be overwritten. By default, fScan will indicate
+The WRITEOVER command temporarily sets the internal OVERWRITE flag.
--w wfile\\
+By default, OVERWRITE is zero and any attempt to overwrite an existing file will generate an error message.
--wL locfile\\
+If OVERWRITE is non-zero, write operations will overwrite existing data files without generating any message.
--wR roifile\\
+When OVERWRITE is set using the WRITEOVER command, the flag remains set only until the next file writing command. This allows you to selectively indicate which data files to overwrite.\\
--wA anatoutfile\\
+For example:
--wE endfile\\
+<code>
--wW waitfile
+  -o exam.wdf -w     ; force writing of file named "exam.wdf", even if it already exists
-===== =====
+  -o -w              ; force writing of current data set to file, even if that file exists
+</code>
+The default behavior of the OVERWRITE flag can changed using the [[jvs:fscan:manual:chapter2:setoverwrite|-SET OVERWRITE]] command.
+<code>
+  -set overwrite    ; allow any file to be overwritten without generating error messages
+  -set overwrite 0  ; default is to not allow existing files to be written unless -w is used
+</code>
 **See Also:**\\
 [[jvs:fscan:manual:chapter2:output|Output]],
-[[jvs:fscan:manual:chapter2:set|Set Overwrite]]\\
+[[jvs:fscan:manual:chapter2:set|Set]],
+[[jvs:fscan:manual:chapter2:setoverwrite|Set Overwrite]]
 [[jvs:fscan|fScan Home]],
 [[jvs:fscan:manual|fScan Manual]],
 [[jvs:fscan:manual:chapter2|CmdLineOptions]],
 [[jvs:fscan:manual:help|Manual Help]]

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