FILESIZE(string-expression)

Returns the size of a file in bytes. The parameter is a path to a file (absolute or relative to CSD$).

Examples

PRINT FILESIZE("/system/webserver/index.html")

REM Guard against missing files
path$ = "data.bin"
IF FILETYPE$(path$) = "file" THEN
    PRINT "Size = "; FILESIZE(path$); " bytes"
ELSE
    PRINT "Not a regular file"
ENDIF

Notes

Raises an error if the path does not exist or refers to a directory.
Result is a 64-bit integer (bytes).

See also: FILETYPE$ · OPENIN · READ$ · BINREAD