本身就是伪随机的，改也没太大意义，

webseek setrngseed



Set random-number seed using random integer from random.org


    Typing setrngseed without arguments is an alternative to using Stata's set seed
    command.  setrngseed obtains truely random integers from www.random.org and uses those
    results to set the seed of Stata's pseudo-random-number generator.

    www.random.org will currently deliver roughly 32,000 seeds per 24-hour period.  You
    can visit www.random.org and purchase additional random numbers should you need them,
    which is unlikely, or to make a donation in support of their efforts.

恩，是的。
但是我想把一个比如，样本容量为1000的乱数，从不同的种子重复发100次
但是每次都要 set seed xxx 有些麻烦。
要是能够像Matlab那样能有发随机种子的命令就好了。

set seed `=int(uniform()*1000000)'

谢谢大家，谢谢 sungmoo。