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FreeBSD--4.9-RELEASE

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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
【FreeBSD--4.9-RELEASE】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
Supportfor the Physical Address Extensions (PAE) capability on Intel Pentium Proand higher processors has been added. This allows the use of up to 64GB ofRAM in a Machine, although the amount of memory usable by any singleprocess (or the FreeBSD kernel) is unchanged. The;pae(4) manual page has more details on thisfeature.
中譯:透過PAE Kernel參數 可以支援到 64GB的RAM.
Network Protocols
ipfw(4) rules now support comma-separatedaddress 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 ofaddresses more readable.

ipfw(4)rules now support C-style comments. Each comment isstored 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 forthe default rules. They can be deleted by ipfw delete set 31 command butare not deleted by the ipfw flush command. This implements a flexible formof ``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 tolimit the scope of the current operation to the ARP entries on aparticular 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)listand show command now support ranges of rulenumbers.
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 ofcommands 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 IPv6and ICMPv6 traffic.
中譯: systat 顯示包含 IPv6 和ICMPv6 的流量
Ports/Packages CollectionInfrastructure
pkg_create(1)now supports a -C option, which allows packagesto register a list of other packages with which they conflict. They willrefuse to install (via pkg_add(1)) ifone 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"reupgrading from a previous release of FreeBSD, you generally will havethree options:

Using the binary upgrade option of sysinstall(8). This option is perhaps thequickest, although it presumes that your installation of FreeBSD uses nospecial compilation options.

Performing a complete reinstall ofFreeBSD. Technically, this is not an upgrading method, and in any case isusually less convenient than a binary upgrade, in that it requires you tomanually backup and restore the contents of /etc. However, it may beuseful in cases where you want (or need) to change the partitioning ofyour disks.

From source code in /usr/src. This route is moreflexible, but requires more disk space, time, and technical expertise.More information can be found in the ``Using make world"" section of theFreeBSD Handbook. Upgrading from very old versions of FreeBSD may beproblematic; in cases like this, it is usually more effective to perform abinary 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

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