Category Archives: Computer

Computer Technical Notes

CAcert

del.icio.us 上看到的玩意:CAcert.org。這個站台成立的目的是:

It’s been a long time coming, but the wait was worthwhile, finally you are able to get security at the right price… Free!

For years we’ve all been charged high amounts of money to pay for security that doesn’t and shouldn’t cost the earth.

The primary goals are:

Inclusion into mainstream browsers!
To provide a trust mechanism to go with the security aspects of encryption.

在 “CAcert.org Statistics” 可以看到目前的數量,而在 “Root Certificate” 可以 import root certificate。

不過很可惜,要手動 import key… XD

PayPal Fee Calculator

ForeverGeek 看到:PayPal Fee Calculator,提供一個網站 PayPal Fee Calculator,為什麼呢:

My wife doesn’t do much on the computer other than email, but she occasionally sells a dog online or something and wants to use my PayPal account to get the money. But she always wants to charge the buyer extra so that if she asks for $100, she’ll actually get $100, not $96.80, after PayPal takes their fees. So anyway, guess who she asks to handle that and figure up all of that information for her…

So anyway, after doing that more than a few times for her, myself, and other people, I decided to make a site that would do it for me. So here it is.

果然是長輩,隨便註冊一個 domain 玩… 不過既然是老婆大人要用,花個幾塊錢倒是無所謂 XD 順便公開出來 (透過 ForeverGeek 讓大家看?:p) 讓大家爽一爽,再放個 Google Adsense 看看能不能撈幾毛 :p (啊啊,聽起來頗讚啊)

跟 chunhan 聊到短網址

剛剛跟 chunhan 聊到短網址 (ex: TinyURL0rz) 的事情,提到他目前的作法,發現目前這種作法,如果要搬到外面有提供 database 的 web hosting,大概也會被擋下來吧,資料庫實在太大了 :p

所以我跟他建議用 SQLite,相當好用的 SQL server,尤其 query statesment 其實不怎麼複雜的時候…

SQLite 用單一檔案作為 backend storage,提供絕大多數的 SQL92 語法。在官方網站上面有 Speed Comparison,你可以看出跟 MySQL 速度的差異…

(其實我覺得最變態的是 SQLite 2.x & 3.xports 都是怪叔叔 ijliao 做的 -_-)

Firefox 的 extension (unzip :p)

我一直沒有去研究 Firefox 的 extension 是怎麼做到跨平台的,本來以為是某種特殊的 binary (換句話說,需要 compile),今天突然想到 far 並不會 Windows Programming,於是就去抓了 0rz.netplugins 來看,先用 file 讀看看這是什麼鬼:

gslin@netnews [~/work/0rz] [19:17/W3] file 0rz.zip
0rz.zip: Zip archive data, at least v1.0 to extract

Good,unzip 後發現有個 .jar,這東西看檔名就知道要 unzip :p

進去翻一翻,發現是一堆 rdf & javascript (或者是一個很像 javascript 的 language),原來是這麼簡單 o_____O

看來我以前想太多了 XD