Java program calling a UNIX command

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1

I was wondering if it was possible to call a unix command directly from a Java program during run-time. This command could very very basic e.g. "ps -ef" returned as a string, all I need is a starting place so if anyone has any suggestion or examples I would be very grateful

2

A good example of what you want is at...

http://www.devdaily.com/java/edu/pj/pj010016/pj010016.shtml

...the code snippit...

...
// run the Unix "ps -ef" command

        Process p = Runtime.getRuntime\(\).exec\("ps -ef"\);
        
        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\("Here is the standard output of the command:\\n"\);
        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\(s\);
        \}

...

3

Thanks,
That does the trick nicely:D