cffile - append text to a text file on the server
cffileappend.cfm
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<html xmlns="http://www.w3.org/1999/xhtml">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>ColdFusion cffile tag example: how to append text to a text file on the server</title>
</head>
<body>
<h2 style="color:DodgerBlue">ColdFusion cffile tag example: Append</h2>
<cfset MyFile="C:\Test.txt">
<cfoutput>
<cfif FileExists(MyFile)>
File Exists: #MyFile#
<cffile action="append" file="#MyFile#" output="This is a test line.">
<br />
Text append in this file successfully!
<cfelse>
File not Exists: #MyFile#
</cfif>
</cfoutput>
</body>
</html>
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