asked on

Program error!!

<%@ page import="java.io.*";%>
<%!
public void display(){
String rtn="";
Runtime rt = Runtime.getRuntime();
try {
Process d = rt.exec("ls");
InputStream in = d.getInputStream();
DataInputStream din = new DataInputStream(in);
String inline = new String("start");
while (inline != null) {
inline = din.readLine();
if (inline != null ) {
rtn = inline;
System.out.println(rtn);
}
}
din.close();
}
catch(IOException e) {
System.out.println("IOException");
}
//return rtn;
}
%>
<html><head><title>test</title></head><body>
<%= display()%>
</body></html>

__________________________________________________________

Whats worng with the above code? How can I print out all the lines when I execute the ls command? How do I change directory from the above code?

Please help.

Cheers
Jason

Ovi

import java.io.*;

public class OutputCapture {
public static void main(String[] args) {
String cmd = "ls -al";
try {
Process process = Runtime.getRuntime().exec(cmd);
InputStream is = process.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line = "";
while ((line = reader.readLine()) != null) {
System.out.println("Line : " + line);
}
} catch(Exception e) {}
}
}

ASKER CERTIFIED SOLUTION

Ovi

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jason101799

ASKER

ovi,

I wanted it to be in JSP. Can u help? One more qs is how do i execute a file which contains a string like "echo hello".

CHeers
Jason

jason101799

ASKER

ovi,

I need that file to be in JSP, perhaps you can advice.

Thanks

Cheers
Jason

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