Binaryworld - Create a Touch utility ... [ VB.net -> Files & Folder ]

The SetCreationTime, SetLastWriteTime, and SetLastAccessTime methods of the System.IO.Directory class let you modify the date attributes of a file or directory:

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' Change the access date- and time of all files in C:\DOCS.
For Each fname In Directory.GetFiles("c:\docs")
File.SetLastAccessTime(fname, Date.Now)
Next

The SetCreationTime can easily create a "touch" utility that modifies the last write time of all the files specified on its command line. Here's it complete listing

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' Change the access date- and time of all files whose name is
' passed on the command line.
Dim args() As String = Environment.GetCommandLineArgs
' The first item in args is the EXE name, and must be skipped.
Dim i As Integer
For i = 1 To Ubound(args)
File.SetCreationTime(args(i), Date.Now)
Next