FreeBSD 4.9-Release Note
當然除了以下之外還有,有興趣請自行查閱,此為泡泡自行的註釋
網址:http://www.freebsd.org/releases/4.9R/relnotes-i386.html
發布日期: 2003/10/28
Security Advisories
修正 FreeBSD-SA-03:07.sendmail (也就是 sendmail 版本為 8.12.9 所以仍需要修補..^^") 等等錯誤.
Kernel Changes
Support for the Physical Address Extensions (PAE) capability on Intel Pentium Pro and higher processors has been added. This allows the use of up to 64GB of RAM in a machine, although the amount of memory usable by any single process (or the FreeBSD kernel) is unchanged. The pae(4) manual page has more details on this feature.
中譯:透過PAE Kernel參數 可以支援到 64GB 的RAM.
Network Protocols
ipfw(4) rules now support comma-separated address lists (such as 1.2.3.4, 5.6.7.8/30, 9.10.11.12/22), and allow spaces after commas to make lists of addresses more readable.
ipfw(4)rules now support C++-style comments. Each comment is stored together with its rule and appears using the ipfw(8)show command.
ipfw(8)can now modify ipfw(4) rules in set 31, which was read-only and used for the default rules. They can be deleted by ipfw delete set 31 command but are not deleted by the ipfw flush command. This implements a flexible form of ``persistent rules''. More details can be found in ipfw(8)
中譯: ipfw 新增支援用逗點分隔位址;支援C++語法;及相關ipfw刪除功能.
Userland Changes
arp(8)now supports a -i option to limit the scope of the current operation to the ARP entries on a particular interface. This option applies to the display operations only. It should be useful on routers with numerous network interfaces.
中譯: arp 新增一個 -a 參數,用來限制某一特定介面的ARP運作範圍.
ipfw(8)list and show command now support ranges of rule numbers.
中譯: ipfw list及 show 命令支援ipfw規則編號範圍.
ipfw(8) now supports a -n flag to test the syntax of commands without actually changing anything.
中譯: ipfw 提供 -n 參數 在不變動任何狀況下,提供測試ipfw規則.
systat(1)now includes displays for IPv6 and ICMPv6 traffic.
中譯: systat 顯示包含 IPv6 和 ICMPv6 的流量
Ports/Packages Collection Infrastructure
pkg_create(1)now supports a -C option, which allows packages to register a list of other packages with which they conflict. They will refuse to install (via pkg_add(1)) if one of the listed packages is already present. The -f flag to pkg_add(1) overrides this conflict-checking.
中譯:pkg_create 新支援 -C 參數,當登錄安裝軟體發生衝突時使用.
可以透過 pkg_add 的 -f 參數強制忽略衝突性的檢查.
Upgrading from previous releases of FreeBSD
If you're upgrading from a previous release of FreeBSD, you generally will have three options:
Using the binary upgrade option of sysinstall(8). This option is perhaps the quickest, although it presumes that your installation of FreeBSD uses no special compilation options.
Performing a complete reinstall of FreeBSD. Technically, this is not an upgrading method, and in any case is usually less convenient than a binary upgrade, in that it requires you to manually backup and restore the contents of /etc. However, it may be useful in cases where you want (or need) to change the partitioning of your disks.
From source code in /usr/src. This route is more flexible, but requires more disk space, time, and technical expertise. More information can be found in the ``Using make world'' section of the FreeBSD Handbook. Upgrading from very old versions of FreeBSD may be problematic; in cases like this, it is usually more effective to perform a binary upgrade or a complete reinstall.
中譯:若你想要從前一版本升級到4.9R,你可以有三種選擇.
1.透過 sysinstall 方式直接用binary升級.(沒有太多選擇設定,是最快的方式!!)
2.完全的重新安裝FreeBSD.技術上來說,這不能算是升級動作..你必須自行備份 /etc 下的檔案
不過,對於若要重新分割磁區來說,這是相當方便的.
3.透過 /usr/src 進行更新.這個步驟是很有彈性的,但是需要額外的硬碟空間及*技術經驗*.
從舊版本升級*可能*充滿問題,基本上來說,若要避免這個狀況,步驟1,2是比較有效率的.
Please read the INSTALL.TXT file for more information, preferably before beginning an upgrade. If you are upgrading from source, please be sure to read /usr/src/UPDATING as well.
中譯:在升級前請閱讀 INSTALL.TXT 及 /usr/src/UPDATING
Important: Upgrading FreeBSD should, of course, only be attempted after backing up all data and configuration files.
中譯:請務必注意,*在升級FreeBSD之前*,請務必備份*所有資料及相關設定檔*!!
