PlanetLab hammers on robots.txt

The Planet Lab consortium is, toquote its banner, 'an open platform for developing, deploying, andaccessing planetary-scale services'. Courtesy of a friend noticing , today'splanetary-scale service appears to be repeatedly requesting robots.txt from people's webservers.

Here, they've made 523 requests (so far) from 323 different IPaddresses (PlanetLab nodes are hosted around the Internet, mostly atuniversities; they usually have 'planetlab' or 'pl' or


20060515網摘 – Media and Blog

Media and Blog

  • Media and Blog Quote: 不過說到網誌可取代報紙,我則認為是言過其實,說是互補不足較為可取。
  • 為什麼網誌要取代報紙? Quote: 當人人都有機會表達自己,所產生的力量,應該會比只得一兩個人去發聲大。意見的集合,或會製造出另

Wii 控制器之雜感

今年 E3,最受注目的是任天堂的新主機 Wii,自從上年公佈了產品,大家從其概念影片中看到那個 Wii-mote 控制器,明白這個控制器所會帶來的全新遊戲體驗,就越來越期待了。今年 E3 更多詳細的資料公佈了,除了知道有什麼遊


Link: an engineering management hack

Engineering Management Hacks: The BigBook Technique is an amusing story of how a group of engineers got their managementto pay attention to Brooks's Law ("Adding manpower to a late softwareproject makes it later"). I won't spoil the punchline; read it yourself.

Around here we don't have problems with Brooks's Law, perhaps becausewe don't have the extra manpower to add to late projects to start with.

(From Daring Fireball .)


A small user interface suggestion

Your button for 'mark all items as read' should not be rightnext to the button for 'advance to next unread item'. Liferea , I'm looking at you .

(Fortunately it was not a feed with a lot of unread or updateditems. I think.)


Weekly spam summary on May 13th, 2006

Unfortunately, the SMTP frontend died shortly after midnight onTuesday morning, so some of the connection statistics are missingabout 2.6 days. Given that, this week we:

  • got 11,652 messages from 229 different IP addresses.
  • handled 16,296 sessions from 808 different IP addresses.
  • received 110,313 connections from at least 35,408 different IPaddresses since early Tuesday morning.
  • hit a highwater of 11 connections being

Absolute versus relative URLs in syndication feeds

I just changed DWiki to generate absolute URLs for the '(N comments)'links at the bottom of entries in my Atom syndication feeds, instead ofthe absolute path URLs it used to generate (URLs without the https://host/portion) . This scrubs out the last non-absolute URLs in my syndicationfeed; URLs in the text of entries in the feed have always been absolute,because I'm cautious and cynical.

In theory absolute URLs are unnecessary in Atom entries, because Atomhas


Safely updating Unix files

Tim Bray provides Apple some instructions onhow to update files containing important data (like iCal calendars). Hisdirections are fine at a high level, but they're actually not quitedetailed enough to implement from.

So here's how you safely update Unix files:

  1. create a new scratch file in the same directory as the target file(ideally mode 0600).
  2. write the data to it; optionally fsync() ; optionally verify thedata.
  3. copy the current version's permissions to the

澳門人需要野火集


昨晚重溫了龍應台教授的"野火集",覺得澳門到現在還未能出現這種有益有建設性的言論,不免有點惆悵,越讀越覺得澳門人需要"野火集",想像一下,假如我們年輕一輩寫blog的人個個都像龍應台一樣有火,這個像一池死水

庸俗.sentimental.不可穿越

據說昨天凶星入道,理性堅實的論文大隊運勢急轉,為了幾首粵語流行曲,幾乎一夜崩潰。尤記當年有「我的十首楊千嬅」,現依照本 blog 數月以來「庸俗!消費!無思考!傷他悶透!」無恥趨勢,誠邀各 君子共同分享流行曲血