Arguments

srcFile  (string) name of the source file to be copied
dstFile  (string) name of the source file to be copied
doAppend  (optional) if provided as non-NIL, the content of srcFile is appended to the content of dstFile

Return

(integer) number of bytes copied from srcFile; -1 if an error happened

Example

Remarks

if no path is specified for the file name, the file is searched in actual OS folder;

the file copy operation also supports binary file content (not only text files)