NTP tips

時間合わせで有名ものは桜時計ですが、もちろん UNIXの世界でもNTPは使えます。Vine Linuxにはxntpが入っているようです。
まずは、uid=0の状態で

とすると、大きくずれた時間があわされます。あとは/etc/ntp.conf を編集してntpd(或いはxntpd)を走らせます。

# 試行サービス
server 210.173.160.27 # ntp1.jst.mfeed.ad.jp
server 210.173.160.57 # ntp2.jst.mfeed.ad.jp
server 210.173.160.87 # ntp3.jst.mfeed.ad.jp
# ECCで使われているようだ。
server 130.69.251.23 # ntp.nc.u-tokyo.ac.jp
server 133.31.30.8 # sutns.sut.ac.jp
server 133.40.41.175 # gpsntp.miz.nao.ac.jp
# digすればわかるが、ここのを使う時はちょっと注意すべき点がある
# 以下は複数並べるべきだが、restrictが...
# server ntp.ring.gr.jp

restrict 210.173.160.27
restrict 210.173.160.57
restrict 210.173.160.87
restrict 130.69.251.23
restrict 133.31.30.8
restrict 133.40.41.175
#restrict ntp.ring.gr.jp

# NAT内のクライアント
restrict 192.168.1.0 mask 255.255.255.0 notrust nomodify notrap
restrict 127.0.0.1
fudge 127.127.1.0 stratum 5
server 127.127.1.0
driftfile /etc/ntp.drift
logfile /var/log/ntp.log

福岡大学のNTPServerを使うのはもうやめましょう。 Trafficの増大がすごいそうです。最近は、ntp.ring.gr.jp でもサービスしているので、これを使うのもよいでしょう。上の例では複数を示しましたが、実際は一つで十分のことが多いです。また、クライアントそれぞれで上位のServerを指すようなことは止めましょう。

Well, no. Russians do not use everything for drinks. It has been empirically
proved that some substances - e.g. slag - cannot be used to make drinks.

Worse, some substances - e.g. slag - cannot be even used for the after-drink
zakuska.

Yet even worse than that, some substances - e.g. slag - are not even useful
for bottling drinks.

The silver lining on the rain cloud, however, is that there are precious few
such substances. Namely, one - slag.

Slainte!

    -- Marc A. Volovic
    -- Linux-IL Post ( http://www.mail-archive.com/linux-il%40cs.huji.ac.il/msg39712.html )

What they really mean is, don't get demoralized. Don't think that you can't do
what other people can. And I agree you shouldn't underestimate your potential.
People who've done great things tend to seem as if they were a race apart. And
most biographies only exaggerate this illusion, partly due to the worshipful
attitude biographers inevitably sink into, and partly because, knowing how the
story ends, they can't help streamlining the plot till it seems like the
subject's life was a matter of destiny, the mere unfolding of some innate
genius. In fact I suspect if you had the sixteen year old Shakespeare or
Einstein in school with you, they'd seem impressive, but not totally unlike
your other friends.

Paul Graham
"What You'll Wish You'd Known" - http://www.paulgraham.com/hs.html

    -- Paul Graham
    -- "What You'll Wish You'd Known" ( http://www.paulgraham.com/hs.html )

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