The Flush(file1, file2, ...) command ensures that output, which has been written to the specified files that are assumed to have been opened either implicitly, by Text[Open] or by Binary[Open], is written to disk.

The Flush function does not return anything.

When a file is closed, it is automatically flushed.

$\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{Open}\right]\left(\mathrm{testfile}\right)\:$

$\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{WriteString}\right]\left(\mathrm{testfile}\,''This\; is\; a\; test\backslash n''\right)$

$15$

$$\begin{gathered} \mathbf{if}\mathrm{kernelopts}\left(\mathrm{platform}\right)=''windows''\mathbf{then} \\ \mathrm{ssystem}\left(''type\; testfile''\right) \\ \mathbf{else} \\ \mathrm{ssystem}\left(''cat\; testfile''\right) \\ \mathbf{end}\mathbf{if} \end{gathered}$$

$\left[0\,''''\right]$

$\mathrm{FileTools}\left[\mathrm{Flush}\right]\left(\mathrm{testfile}\right)$

$$\begin{gathered} \mathbf{if}\mathrm{kernelopts}\left(\mathrm{platform}\right)=''windows''\mathbf{then} \\ \mathrm{ssystem}\left(''type\; testfile''\right) \\ \mathbf{else} \\ \mathrm{ssystem}\left(''cat\; testfile''\right) \\ \mathbf{end}\mathbf{if} \end{gathered}$$

$\left[0\,''This\; is\; a\; test''\right]$

$\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{Close}\right]\left(\mathrm{testfile}\right)$