请问下 我装完gentoo 后没有/etc/portage这个目录

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请问下 我装完gentoo 后没有/etc/portage这个目录

echo "gnome-base/gnome-session branding" >>/etc/portage/package.use
bash: /etc/portage/package.use: 没有那个文件或目录

mkdir /etc/portage

提示：make: *** 没有规则可以创建目标“/etc/portage”。 停止。

touch /etc/portage/package.use

谢谢你的回答 这个问题我已经解决了
现在我按照手册的配置 USE="-qt3 -qt4 -arts -kde X dbus gtk gnome avahi"
结果出现了：
(chroot)whjscm / # emerge gnome
Calculating dependencies... done!

emerge: there are no ebuilds built with USE flags to satisfy ">=x11-libs/cairo-1.7.6[svg,X]".
!!! One of the following packages is required to complete your request:
- x11-libs/cairo-1.8.6-r1 (Change USE: +svg)
(dependency required by "x11-libs/pango-1.24.2" [ebuild])
(dependency required by "gnome-base/libgnomecanvas-2.20.1.1" [ebuild])
(dependency required by "gnome-base/libbonoboui-2.24.1" [ebuild])
(dependency required by "mail-client/evolution-2.24.5" [ebuild])
(dependency required by "gnome-base/gnome-2.24.1" [ebuild])
(dependency required by "gnome" [argument])

我把USE="-qt3 -qt4 -arts -kde X dbus gtk gnome avahi"
变成USE="-qt3 -qt4 -arts -kde svg X dbus gtk gnome avahi"
出现了
(chroot)whjscm / # emerge gnome
Calculating dependencies... done!


[nomerge ] gnome-base/gnome-2.24.1 USE="cups -accessibility -cdr -dvdr -esd -ldap -mono"
[nomerge ] gnome-base/nautilus-2.24.2-r3 USE="X gnome -beagle -debug -doc -tracker -xmp"
[nomerge ] gnome-base/librsvg-2.22.3 USE="zlib -debug -doc"
[nomerge ] x11-libs/gtk+-2.14.7-r2 USE="X cups -debug -doc -jpeg -jpeg2k -tiff -vim-syntax -xinerama"
[ebuild N ] net-print/cups-1.3.10-r2 USE="X acl avahi dbus pam perl python ssl -gnutls -java -jpeg -kerberos -ldap -php -png -ppds -samba -slp -static -tiff -xinetd -zeroconf" LINGUAS="-de -en -es -et -fr -he -id -it -ja -pl -sv -zh_TW"
[ebuild N ] net-dns/avahi-0.6.24-r2 USE="dbus gdbm gtk ipv6 python -autoipd -bookmarks -doc -howl-compat -mdnsresponder-compat -mono -qt3 -qt4 -test"
[ebuild N ] dev-python/pygtk-2.14.1-r1 USE="X -doc -examples"
[ebuild N ] gnome-base/libglade-2.6.4 USE="-debug -doc"
[ebuild N ] x11-libs/gtk+-2.14.7-r2 USE="X cups -debug -doc -jpeg -jpeg2k -tiff -vim-syntax -xinerama"

* Error: circular dependencies:

('ebuild', '/', 'net-print/cups-1.3.10-r2', 'merge') depends on
('ebuild', '/', 'net-dns/avahi-0.6.24-r2', 'merge') (buildtime)
('ebuild', '/', 'x11-libs/gtk+-2.14.7-r2', 'merge') depends on
('ebuild', '/', 'net-print/cups-1.3.10-r2', 'merge') (buildtime)
('ebuild', '/', 'net-dns/avahi-0.6.24-r2', 'merge') depends on
('ebuild', '/', 'dev-python/pygtk-2.14.1-r1', 'merge') (buildtime)
('ebuild', '/', 'gnome-base/libglade-2.6.4', 'merge') (buildtime)
('ebuild', '/', 'x11-libs/gtk+-2.14.7-r2', 'merge') (buildtime)
('ebuild', '/', 'gnome-base/libglade-2.6.4', 'merge') depends on
('ebuild', '/', 'x11-libs/gtk+-2.14.7-r2', 'merge') (buildtime)
('ebuild', '/', 'dev-python/pygtk-2.14.1-r1', 'merge') depends on
('ebuild', '/', 'gnome-base/libglade-2.6.4', 'merge') (buildtime)
('ebuild', '/', 'x11-libs/gtk+-2.14.7-r2', 'merge') (buildtime)

* Note that circular dependencies can often be avoided by temporarily
* disabling USE flags that trigger optional dependencies.

请问下安装gnome要具体那些flags阿
我安装gnome之间make.cong里没有任何的USE的

去掉USE裏的avahi
昨天也有人討論過這個問題
http://www.linuxsir.org/bbs/thread356942.html

avahi這樣的東西，在安裝完成以後再加入也不遲。

avahi是干什么的？虽然wiki里说了一句什么和mac什么功能一样，还是不明白。

苹果的一项自动搜索lan内部服务的功能，和kde的zeroconf类似

谢谢大家的回答
gnome装好了
结果不能启动提示 no srceen
结果把centoo中的xorg.conf拷贝一份就可以了 纯属碰运气 为何好了 还不明白
启动后发现gnome 桌面还是有点慢 拖动窗口有留下痕迹 给人感觉很不平滑
不知道怎么样才可以优化 不知是不是我的机子太差了
model name : Intel(R) Celeron(R) CPU 2.40GHz
stepping : 1
cpu MHz : 2400.965
cache size : 256 KB
内存 768
不知怎样可以让安装gnome时不安装自带的浏览器而是安装firefox

还是好好看看手册吧～ 显卡驱动安装了没有？ 关掉gnome的compositing
或者安装的时候安装gnome-light 然后自己一步一步下去～