https://forge.codesys.com/forge/talk/Deutsch/thread/9458fe2b6b/2020-02-28T03:29:21.536000ZRecent posts to Inhalt eines Files löschen2020-02-28T03:29:21.536000Z2020-02-28T03:29:21.536000Zmauskopfhttps://forge.codesys.com/u/mauskopf/https://forge.codesys.comf6eb17bc87e47d985463288b737cb524674d6c25

<div class="markdown_content"><p>Hallo ich ich verwende folgenden Code um ein File zu öffnen und und es zu schreiben!<br/> Jetzt suche ich eine Möglichkeit vor dem öffnen den Inhalt des Files zu löschen!</p> <div class="codehilite"><pre><span></span><span class="o">//</span> <span class="k">open</span> <span class="n">File</span> <span class="err"> </span> <span class="err"> </span><span class="n">FileId</span> <span class="p">:</span><span class="o">=</span> <span class="n">SysFileOpen</span><span class="p">(</span><span class="s1">'/usr/bin/cs_mail.sh'</span><span class="p">,</span> <span class="n">AM_WRITE</span><span class="p">,</span> <span class="n">ADR</span><span class="p">(</span><span class="n">FileResult</span><span class="p">));</span> <span class="err"> </span> <span class="err"> </span><span class="o">//</span> <span class="k">Write</span> <span class="n">File</span> <span class="err"> </span> <span class="err"> </span><span class="n">SysFileWrite</span><span class="p">(</span><span class="n">FileId</span><span class="p">,</span> <span class="n">ADR</span><span class="p">(</span><span class="n">Buffer</span><span class="p">),</span><span class="n">SIZEOF</span><span class="p">(</span><span class="k">first</span><span class="p">),</span> <span class="n">ADR</span><span class="p">(</span><span class="n">WriteResult</span><span class="p">));</span> <span class="err"> </span> <span class="err"> </span><span class="o">//</span><span class="k">close</span> <span class="n">file</span> <span class="err"> </span> <span class="err"> </span><span class="n">SysFileClose</span><span class="p">(</span><span class="n">FileId</span><span class="p">);</span> <span class="err"> </span> <span class="err"> </span> <span class="err"> </span> <span class="err"> </span> </pre></div> <p>Liebe Grüße und danke</p></div>