Re: CAT command

[dave madden]

 =>> From: Juan Carlos [mailto:[EMAIL PROTECTED]]
 =>> 
 =>> ¿How to execute an linux command, to obtain any
 =>> information, using Java?  (ex:  the CAT command).  
 =>> I have Red Hat version 5.3, and jdk1.1.5. 

I suspect you're asking:

In a Java program, how do I execute an external program and read its
results from an InputStream?

I'm using 1.2, and you can do it like this:

        import java.lang.*;
        import java.util.*;
        import java.security.*;
        import java.io.*;

        class foo {
                public static void main( String [] argv )
                        throws IOException
                        {
                                Process          p = Runtime.getRuntime( ).exec( 
"/bin/date" );
                                InputStream      i = p.getInputStream( );
                                int                      ch;

                                while ((ch = i.read( )) != -1) {
                                        System.out.println( "Got '" +
                                                                                new 
Character((char)ch).toString( ) +
                                                                                "'" );
                                }

                                System.out.println( "Done!" );
                        }
        }

d.


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