重未完，未解決
- 巴士阿叔未解決 感性可以，但不要非理性，否則只是無聊
- 當一個人面對巴士怒漢 Quote:年青人文化很奇怪，從來也未建立一套有效對抗「威權」的文化。香港的青年人不是沒有反叛性，而是反叛的手法十分的底劣。
A message you do not want to see from your backup software
We just got the following message today from a well regarded commercialbackup system that costs a lot of money:
* host:/filesystem save: path length of 1025 too long, directorynot saved: /filesystem/long/dir/path/...
Path name length limitations; just what I like to find out about inmy backup software. (I suspect that the limit is 1024 characters andthat the path is not exactly 1025 characters, it's
The problem with treating RAID arrays as single disks
A lot of hardware RAID systems (whether controller based or SANs) liketo present a multi-disk RAID array to the host operating system as asingle device. While attractive, this can lead to hard to diagnoseperformance issues under load (well, a random IO load).
The basic problem is that you get the best performance by keeping allof your disks busy. But when you aggregate multiple disks into what theoperating system sees as one disk, the operating system is going toschedule IO for one disk
地獄
已經停筆一星期了。
20060526網摘 – 中大‧禽流感‧未解決
外部記憶裝置
《攻殼機動隊》常常提到「外部記憶」的裝置，究竟是指甚麼？
所謂「外部記憶」裝置，所指的可以是電子腦、終端機、光碟硬盤等等。這些裝置的主要作出，當然是用來記錄資料，是用來存放符號信息的載體。每個人都有各式
Link: Classic Mistakes Enumerated
Classic Mistakes Enumerated is an exerpt from the book Rapid Development by Steve McConnell; itruns through 36 familiar classic development mistakes that people makeover and over again. Brooks's Law makes an appearance, of course.
(From Bill de hÓra .)
A Linux su surprise
I found out about Linux su 's ' -p ' option from comments on a a previous entry . The option is also known as -m and --preserve-environment ; the manpage describes it tersely as 'donot reset environment variables', but the info document tells the fullstory:
Do not change the environment variables `HOME', `USER', `LOGNAME',or `SHELL'. Run the shell given in the environment variable`SHELL' instead of the shell from USER'
SCGI is a form of caching
This is perhaps an obvious observation, but I've recently consciouslyrealized that persistent SCGI and FastCGI daemons area form of caching of regular CGI programs; rather than caching data,they're caching code and often configurations. Thinking about them thisway has made several things clearer to me.
As caches, they have all of the usual concerns with detecting anddealing with cache invalidation, complicated by the fact that fewenvironments have really good support for loading new versions of yourprogram's code on the fly.
Nike x iPod
雖然我是三間擁躉，但在廣告及Marketing上，以創新而論，我又不得不承認關刀往往稍勝。
這是關刀的最新攪作，將最人氣的隨身聽iPod Nano與其最新型號的跑鞋來個科技上的大結合。
本來，音樂加跑步這兩沒有直接關係的兩碼子事情，立
The not so secret history of vmlinuz
By convention, Linux kernels are called vmlinuz (usually with aversion suffix and found in /boot , although Debian is in love with a /vmlinuz symlink). This name has an interesting history thatprobably stretches back to the early days of Unix.
(I say probably because I'm just guessing at some of the Linux history,as it predates my involvement with Linux.)
Originally, Unix kernels were just called /unix ; this is the name BellLabs used for the original versions up through V7