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Monthly Archives: August 2008
Subversion 1.5 的 merge
Subversion 1.5 最重要的改善就是 merge track,實際用過以後可以發現仍然不如 Git 方便,但比起以前得自己計算 revision 改善許多。 不過也因為 merge 本身帶有意義 (會另外儲存 merge info),在「用 Subversion 的 Merge 來 Undo」這篇所介紹的方法就不適合了,因為 svn merge -r 1234:1233 . . 會帶有 merge info。 現在比較好的方法是:svn diff -r 1234:1233 . | patch -p0,不會產生 merge info。
Posted in Computer, Murmuring, Programming, Software Leave a comment
PHP 4.4.9 – PHP4 最後一個版本
2008/08/07 出的 PHP 4.4.9 released! 會是 PHP 4 最後一個版本,不再有任何更新 (即使有安全漏洞,也不會有安全性更新)。這次的 PHP 4 ChangeLog 也很短,除了把 PCRE 版本升級到 7.7 以外,其他都是 bug 的修正。 官方目前唯一維護的版本是 PHP 5,更細的說是 5.2.x 版,目前大多數的 PHP 軟體 (還活著的 Open Source Project) 應該都可以在上面跑。 另外一個重點是 PHP 5.3 在 2008/08/01 的時候出了第一個 alpha 版,這個版本比 … Continue reading
Posted in Computer, Murmuring, Programming, Software Leave a comment
利用 CSS 產生的隱私問題
雖然很早前就知道 CSS link 可以這樣做,不過實做起來就真的感覺到很邪惡了,既然被 full disclosure,這陣子應該會引起更熱烈的討論:Guessing gender from browser history。 首先請先參考 pesty 這篇「網路廣告商怎麼知道你是誰? 從 ClickStream 來判斷用戶資料」,裡面有提到利用 cookie 資訊去猜測目前這個 user 的性別。首先先知道這個使用者逛過哪些網站,然後再用統計方法算出來。 以往廣告商要判斷使用者逛過哪些網站,僅限於自己旗下的網站。舉例來說,很多網站有放 DoubleClick 的廣告,那麼 DoubleClick 就可以利用 IP 資訊、Cookie 資訊、User-Agent 之類的資訊來判斷哪些 request 是同一個使用者,所以 DoubleClick 就可以判斷出這個使用者有上過他旗下哪些網站。 但利用 CSS 隱私漏洞,如果想要知道某個使用者是不是上過某個特定 URL 是可行的。簡單的解釋是:插入一個 link,然後對這個 link … Continue reading
HiNet DNS 出問題
目前原因不明,有可能是國外發現怎麼打在 L4 switch 後面的 DNS server 達到 DNS poison 的效果,也有可能是升級造成的問題,總之目前有很高的 packet lost: 168.95.1.1: 168.95.192.1: 168.95.192.2:
Del.icio.us to Delicious
Del.icio.us 整個介面大升級 (據官方的說法,底層的程式也大翻修過),換到 Delicious。 換過去後我第一個找的是 Javascript Bookmarklet,要把舊的換掉,找了許久還是找不到,最後在 Help 裡面找到 (其他頁沒有連結進去):Install Bookmarklets on Delicious。
