JAVA在linux环境执行linux命令

代码块：

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public class ExecLinuxUtils {
    
    public static Object exec(String cmd) {  
        try {  
            String[] cmdA = { "/bin/sh", "-c", cmd };  
            Process process = Runtime.getRuntime().exec(cmdA);  
            LineNumberReader br = new LineNumberReader(new InputStreamReader(  
                    process.getInputStream()));  
            StringBuffer sb = new StringBuffer();  
            String line;  
         while ((line = br.readLine()) != null) {  
                System.out.println(line);  
                sb.append(line).append(" ");  
            }  
            return sb.toString();  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
        return null;  
    }  
   
    public static void main(String[] args) {  
        // TODO Auto-generated method stub  
        String tString = exec("cat t.txt").toString();
        System.out.println(tString);  
    }  

}

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