Call and store response from a url using bash script

#!/bin/bash

## generate random string of length 18
function randpass
{
        echo `</dev/urandom tr -dc A-Za-z0-9 | head -c18`
}

## get current time stamp
timestamp=$(date  +%s);
sessionId="$(randpass).$(randpass).$timestamp";
privateKey='test';
 
## get substring of sessionId from 0 to 5 characters.
sessionIdPart=${sessionId:0:5};
systemKeyPart=${privateKey:0:4};

## reverse string and store in a variable
word="$(echo "$sessionIdPart" | rev)$(echo "$systemKeyPart" | rev)";
word="$word$sessionId$privateKey";
 
## make a string md5
hash=`echo -n "$word" | md5sum | awk '{print $1}'`;
hash=${hash:0:10};
breakRest="securedSessionKey=$sessionId&securedHash=$hash";
 
saveFile=$(date +"%Y-%m-%d %T"); 
## saveFile would be '2013-08-25 19:23:28'

## calling a url using 'curl' and store response to some file.
curl -s -L -o "$saveFile.html" "http://domain.com/getStudent?$breakRest" &
## "&" sign at the end means run curl in background.

exit 1;

Run Bash Script Using Java And Get Debug And Error Output

String command = "sudo /usr/bin/some_name.sh";
System.out.println("runBashScriptCommand: " + command);
try {
    Runtime runtime = Runtime.getRuntime();
    Process process = runtime.exec(command);
    printBufferedReaderOutputFromProcess(process);
    process.waitFor();
    return "true";
} catch (Exception ex) {
    System.out.println("EX:" + ex.toString());
    return ex.toString();
}

private void printBufferedReaderOutputFromProcess(Process p) {
    try {
        String s = null;
        BufferedReader stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
        BufferedReader stdError = new BufferedReader(new InputStreamReader(p.getErrorStream()));
        // read the output from the command
        System.out.println("\n\npHere is the standard output of the command:\n");
        while ((s = stdInput.readLine()) != null) {
            System.out.println(s);
        }
        // read any errors from the attempted command
        System.out.println("Here is the standard error of the command (if any):\n");
        while ((s = stdError.readLine()) != null) {
            System.out.println(s);
        }
    } catch (Exception ex) {
        System.out.println("printBufferedReaderOutputFromProcess:" + ex.toString());
    }
}