java 获取linux进程信息

public static String run(String shell) throws IOException{
Process process = Runtime.getRuntime().exec(shell);
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
StringBuilder br = new StringBuilder();
String tmp;
while((tmp=br.readline())!=null){
	sb.append(tmp).append("\n");
}

return sb.toString();
}