Java调用Linux命令

// int tp = 1 返回执行结果  非1 返回命令执行后的输出
public static String runCommand(String cmd, int tp) {
StringBuffer buf = new StringBuffer(1000);
String rt = "-1";
try {
Process pos = Runtime.getRuntime().exec(cmd);
pos.waitFor();
if (tp == 1) {
if (pos.exitValue() == 0) {
rt = "1";
}
} else {
InputStreamReader ir = new InputStreamReader(pos.getInputStream());
LineNumberReader input = new LineNumberReader(ir);
String ln = "";
while ((ln = input.readLine()) != null) {
buf.append(ln + "<br>");
}
rt = buf.toString();
input.close();
ir.close();
}
} catch (java.io.IOException e) {
rt = e.toString();
} catch (Exception e) {
rt = e.toString();
}
return rt;
}