[solved,thx]几个小问题，望前人指点一下 ...

iblicf@gentoo ~/readings/zh_CN1/man1 $ locale
LANG=zh_CN.UTF-8
LC_CTYPE="zh_CN.UTF-8"
LC_NUMERIC="zh_CN.UTF-8"
LC_TIME="zh_CN.UTF-8"
LC_COLLATE="zh_CN.UTF-8"
LC_MONETARY="zh_CN.UTF-8"
LC_MESSAGES="zh_CN.UTF-8"
LC_PAPER="zh_CN.UTF-8"
LC_NAME="zh_CN.UTF-8"
LC_ADDRESS="zh_CN.UTF-8"
LC_TELEPHONE="zh_CN.UTF-8"
LC_MEASUREMENT="zh_CN.UTF-8"
LC_IDENTIFICATION="zh_CN.UTF-8"
LC_ALL=zh_CN.UTF-8

alias cman='man -M /home/iblicf/readings/zh_CN1'

iblicf@gentoo ~/readings/zh_CN1/man1 $ enca mv.1
Universal transformation format 8 bits; UTF-8

iblicf@gentoo /etc $ grep NROFF man.conf
# NROFF is defined as "groff -Tascii" or "groff -Tlatin1";
# For use with utf-8, NROFF should be "nroff -mandoc" without -T option.
# causes problems, add the -c option to TROFF, NROFF, JNROFF.
#NROFF /usr/bin/nroff -Tascii -c -mandoc
NROFF /usr/bin/nroff -mandoc -c
JNROFF /usr/bin/groff -Tnippon -mandocj

gentoo etc # emerge -pv gnome-volume-control
These are the packages that would be merged, in order:

Calculating dependencies -
emerge: there are no ebuilds to satisfy "gnome-volume-control".

 $pquery --attr alldepends -m nautilus-cd-burner --max -v --raw
 * gnome-extra/nautilus-cd-burner-2.20.0
 repo: gnome
 description: CD and DVD writer plugin for Nautilus
 homepage: http://www.gnome.org/
 depends: 
 >=gnome-base/gnome-vfs-2.1.3.1
 >=dev-libs/glib-2.10
 >=x11-libs/gtk+-2.6
 >=gnome-base/libglade-2
 >=gnome-base/libgnome-2.14
 >=gnome-base/libgnomeui-2.14
 >=gnome-base/eel-2.14
 >=gnome-base/nautilus-2.16
 >=gnome-base/gconf-2
 >=gnome-base/gnome-mount-0.4
 >=sys-apps/hal-0.5.7
 >=dev-libs/dbus-glib-0.71
 cdr? ( virtual/cdrtools )
 dvdr? ( >=app-cdr/dvd+rw-tools-6.1 )
 sys-devel/gettext
 >=dev-util/pkgconfig-0.9
 >=dev-util/intltool-0.35
 >=sys-apps/sed-4
 rdepends: 
 >=gnome-base/gnome-vfs-2.1.3.1
 >=dev-libs/glib-2.10
 >=x11-libs/gtk+-2.6
 >=gnome-base/libglade-2
 >=gnome-base/libgnome-2.14
 >=gnome-base/libgnomeui-2.14
 >=gnome-base/eel-2.14
 >=gnome-base/nautilus-2.16
 >=gnome-base/gconf-2
 >=gnome-base/gnome-mount-0.4
 >=sys-apps/hal-0.5.7
 >=dev-libs/dbus-glib-0.71
 cdr? ( virtual/cdrtools )
 dvdr? ( >=app-cdr/dvd+rw-tools-6.1 )
 post_rdepends:

emerge file-roller -av

# qfile gnome-volume-control
gnome-extra/gnome-media (/usr/bin/gnome-volume-control)
gnome-extra/gnome-media (/usr/share/gnome/help/gnome-volume-control)

iblicf@gentoo /etc $ groff -v
GNU groff version 1.18.1
Copyright (C) 2002 Free Software Foundation, Inc.
GNU groff comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of groff and its subprograms
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.

called subprograms:

GNU troff (groff) version 1.18.1
GNU grops (groff) version 1.18.1

TROFF /usr/bin/groff -Tps -mandoc
#NROFF /usr/bin/nroff -Tascii -c -mandoc
#NROFF /usr/bin/nroff -mandoc -c
NROFF /usr/bin/groff -S -Tlatin1 -mandoc
#TROFF /usr/local/bin/groff-utf8 -Tutf8 -mandoc
#NROFF /usr/local/bin/groff-utf8 -Tutf8 -mandoc

Reading config file /etc/man.conf
Cannot open the message catalog "man" for locale "zh_CN.UTF-8"
(NLSPATH="<none>")

found man directory /usr/share/man
found man directory /usr/local/share/man
found man directory /usr/X11R6/man
found man directory /usr/local/man
found man directory /usr/man
found manpath map /bin --> /usr/share/man
found manpath map /sbin --> /usr/share/man
found manpath map /usr/bin --> /usr/share/man
found manpath map /usr/sbin --> /usr/share/man
found manpath map /usr/local/bin --> /usr/local/share/man
found manpath map /usr/local/sbin --> /usr/local/share/man
found manpath map /usr/X11R6/bin --> /usr/X11R6/man
found manpath map /usr/bin/X11 --> /usr/X11R6/man
found manpath map /usr/bin/mh --> /usr/share/man

using /usr/bin/less as pager

using /usr/bin/less -is as browser

using /bin/cat to dump HTML pages as text
adding /usr/local/share/man to manpath
adding /usr/share/man/zh_CN to manpath
adding /usr/share/man to manpath
adding /usr/share/binutils-data/i686-pc-linux-gnu/2.18/man to manpath
adding /usr/share/gcc-data/i686-pc-linux-gnu/4.1.1/man to manpath
will try to write /var/cache/man/zh_CN/cat1/su.1.bz2 if needed
status from is_newer() = -2
using default preprocessor sequence
found tbl(1) directive
man: 
not executing command:
 (cd /usr/share/man/zh_CN && (echo ".pl 1100i"; /bin/bzip2 -c -d '/usr/share/man/zh_CN/man1/su.1.bz2'; echo ".\\\""; echo ".pl \n(nlu+10") | /usr/bin/gtbl | /usr/bin/groff -S -Tlatin1 -mandoc | /usr/bin/less)

NAME(名称)
 su - 运行替换用户和组标识的shell

SYNOPSIS(总览)
 su [OPTION]... [-] [USER [ARG]...]

DESCRIPTION(描述)
 修改有效用户标识和组标识为USER的.

 -, -l, --login
 使得shell为可登录的shell

 -c, --commmand=COMMAND
 传递单个COMMAND给-c的shell.

 -f, --fast
 传递-f给shell(针对csh或tcsh)

 -m, --preserve-environment
 不重置环境变量

 -p 与-m同

 -s, --shell=SHELL
 如果/etc/shells允许,运行SHELL.

 --help 显示帮助并退出