Re: executing unix programs through java

"ruds" <rudranee@gmail.com> wrote in message
news:1155983221.064144.285110@m73g2000cwd.googlegroups.com...


You can run a shell on the comand line using Runtime.exec()

String[] cmdArray = new String[3];
        cmdArray[0] = "/usr/local/bin/bash";
        cmdArray[1] = "-c";
        cmdArray[2] = "pwd"; // your command

try {
            // start command running
            Process proc = Runtime.getRuntime().exec(cmdArray);

            // get command's output stream and
            // put a buffered reader input stream on it
            InputStream istr = proc.getInputStream();
            BufferedReader br = new BufferedReader(new
InputStreamReader(istr));
            try {

                // read output lines from command
                String str;
                while ((str = br.readLine()) != null) {
                    // process your results
                }
                // wait for command to terminate
                try {
                    proc.waitFor();
                }
                catch (InterruptedException ie) {
                    LOGGER.error("InterruptedException caught ", ie);
                    // possibly throw an exception here
                }

                // check its exit value
                if (proc.exitValue() != 0) {
                    InputStream errorStream = proc.getErrorStream();
                    BufferedReader brErr = new BufferedReader(new
InputStreamReader(errorStream));
                    String errStr;
                    StringBuffer errSB = new StringBuffer();
                    while ((errStr = brErr.readLine()) != null) {
                        errSB.append(errStr + "\n");
                    }
                    LOGGER.error("exit value was non-zero : \n" +
errSB.toString());
                   // possibly throw an exception here
                }
            }
            finally {
                br.close();
            }
        }
        catch (Exception ex) {
            // handle exception
        }

Hope this helps :-)

--
pdtct