using System;
using System.IO;
class Class1 {
    static void Main(string[] args) {
        string[] cla = Environment.GetCommandLineArgs();
        if (cla.GetUpperBound(0) == 2) {
            FileInfo fi = new FileInfo(cla[1]);
            fi.MoveTo(cla[2]);
            Console.WriteLine("File Created : " + fi.CreationTime.ToString());
            Console.WriteLine("Moved to     : " + cla[2]);
        } else
            Console.WriteLine("Usage: mv <source file> <destination file>");
    }
}
           
         
     

   
 

using System;
using System.IO;
class Class1 {
    static void Main(string[] args) {
        string[] cla = Environment.GetCommandLineArgs();
        if (cla.GetUpperBound(0) == 1) {
            FileInfo fi = new FileInfo(cla[1]);
            fi.Delete();
            Console.WriteLine("File      : " + cla[1]);
            Console.WriteLine("Attributes: " + fi.Attributes.ToString());
            Console.WriteLine("File Deleted...");
        } else
            Console.WriteLine("Usage: rm <filename>");
    }
}
           
         
     

   
 



using System;
using System.IO;

public class LicenseViewer {
    public static void Main() {
        FileInfo license = new FileInfo("c:LICENSE.txt");
        StreamReader txtIn = license.OpenText();
        String line;
        do {
            line = txtIn.ReadLine();
            Console.WriteLine(line);
        } while (line != null);
    }
}

           
         
     

   
 
using System;
using System.IO;

class FileFileInfoApp
{
    static void Main(string[] args)
    {
        FileInfo f = new FileInfo("Bar.txt");
        FileStream fs = f.Create();
   
        StreamWriter w = new StreamWriter(fs);
        w.Write("Hello World");
        w.Close();
   
        fs = f.Open(FileMode.Open, FileAccess.Read, FileShare.None);
        StreamReader r = new StreamReader(fs);
        string t;
        while ((t = r.ReadLine()) != null){
            Console.WriteLine(t);
        }
        w.Close();
        fs.Close();
        f.Delete();
    }
}
           
         
     

   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example19_5.cs illustrates demanding permissions
*/

using System;
using System.IO;
using System.Security.Permissions;

[FileIOPermissionAttribute(SecurityAction.Demand,
All=@"c:	emp")]
public class Example19_5 
{

    public static void MakeFile() 
    {

        // Create a new file to work with
        FileStream fsOut = File.Create(@"c:	emp	est.txt");
        // Create a StreamWriter to handle writing
        StreamWriter sw = new StreamWriter(fsOut);
        // And write some data
        sw.WriteLine("'Twas brillig, and the slithy toves");
        sw.WriteLine("Did gyre and gimble in the wabe.");
        sw.Flush();
        sw.Close();

    }
}
          
          

   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/


/*
  Example19_8.cs illustrates declarative role-based security
*/

using System;
using System.IO;
using System.Security.Permissions;

[PrincipalPermissionAttribute(SecurityAction.Demand, Role="Administrators")]
public class Example19_8 
{
    public static void Main() 
    {

        // Create a new file to work with
        FileStream fsOut = File.Create(@"c:	emp	est.txt");
        // Create a StreamWriter to handle writing
        StreamWriter sw = new StreamWriter(fsOut);
        // And write some data
        sw.WriteLine("'Twas brillig, and the slithy toves");
        sw.WriteLine("Did gyre and gimble in the wabe.");
        sw.Flush();
        sw.Close();

    }
}
           
          

   

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example19_9.cs illustrates encrypting a file
*/

using System;
using System.IO;
using System.Security.Cryptography;

public class Example19_9 
{
    public static void Main() 
    {

        // Create a new file to work with
        FileStream fsOut = File.Create(@"c:	empencrypted.txt");

        // Create a new crypto provider
        TripleDESCryptoServiceProvider tdes = 
            new TripleDESCryptoServiceProvider();

        // Create a cryptostream to encrypt to the filestream
        CryptoStream cs = new CryptoStream(fsOut, tdes.CreateEncryptor(), 
            CryptoStreamMode.Write);

        // Create a StreamWriter to format the output
        StreamWriter sw = new StreamWriter(cs);

        // And write some data
        sw.WriteLine("'Twas brillig, and the slithy toves");
        sw.WriteLine("Did gyre and gimble in the wabe.");
        sw.Flush();
        sw.Close();

        // save the key and IV for future use
        FileStream fsKeyOut = File.Create(@"c:	empencrypted.key");
        
        // use a BinaryWriter to write formatted data to the file
        BinaryWriter bw = new BinaryWriter(fsKeyOut);

        // write data to the file
        bw.Write( tdes.Key );
        bw.Write( tdes.IV );

        // flush and close
        bw.Flush();
        bw.Close();

    }

}