我的系统无法使用“软件更新程序”、“ubuntu 软件”或命令行进行更新。
sudo apt-get upgrade返回大量文本（见下文）。我猜这部分可以识别问题：
/usr/sbin/update-info-dir: 2: /etc/environment: LC_NUMERIC: not found
如果我尝试，update-info-dir我会得到同样的错误。
sudo dpkg-reconfigure locales返回：
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US:en",
LC_ALL = "en_US.UTF-8",
LC_PAPER = "en_US.UTF-8",
LC_ADDRESS = "en_US.UTF-8",
LC_MONETARY = "en_US.UTF-8",
LC_NUMERIC = "en_US.UTF-8",
LC_TELEPHONE = "en_US.UTF-8",
LC_IDENTIFICATION = "en_US.UTF-8",
LC_MEASUREMENT = "en_US.UTF-8",
LC_TIME = "en_US.UTF-8",
LC_NAME = "en_US.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
/usr/bin/locale: Cannot set LC_CTYPE to default locale: No such file or directory
/usr/bin/locale: Cannot set LC_MESSAGES to default locale: No such file or directory
/usr/bin/locale: Cannot set LC_ALL to default locale: No such file or directory
Generating locales (this might take a while)...
/usr/bin/locale返回：
LANG=en_US.UTF-8
LANGUAGE=en_US:en
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_COLLATE="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_MESSAGES="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LC_ALL=en_US.UTF-8
然后我尝试：
sudo locale-gen "en_US.UTF-8"
sudo locale-gen --purge --no-archive
sudo update-locale LC_ALL=en_US.UTF-8 LANG=en_US.UTF-8
重新登录
sudo apt-get upgrade仍然产生相同的结果。
根据 Ask Ubuntu 上的另一个答案，我尝试过
sudo apt install locales但apt-get -f install由于同样的原因，这无法运行。
我的/etc/environment文件包含：
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
LC_NUMERIC = "en_US.UTF-8"
LC_MONETARY = "en_US.UTF-8"
LC_PAPER = a4
LC_MEASUREMENT = "en_US.UTF-8"
LC_TIME = "en_US.UTF-8"
LC_ALL="en_US.UTF-8"
LANG="en_US.UTF-8"
该/etc/default/locale文件包含：
# File generated by update-locale
LANG=en_US.UTF-8
LC_NUMERIC="en_US.UTF-8"
LC_TIME="en_US.UTF-8"
LC_MONETARY="en_US.UTF-8"
LC_PAPER="en_US.UTF-8"
LC_NAME="en_US.UTF-8"
LC_ADDRESS="en_US.UTF-8"
LC_TELEPHONE="en_US.UTF-8"
LC_MEASUREMENT="en_US.UTF-8"
LC_IDENTIFICATION="en_US.UTF-8"
LANGUAGE="en_US:en"
LC_ALL=en_US.UTF-8
我的 PATH 变量是：
/home/henkjan/bin:/home/henkjan/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
完整结果sudo apt-get upgrade：
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
The following packages have been kept back:
linux-generic linux-headers-generic linux-image-generic
The following packages will be upgraded:
apparmor appmenu-qt5 desktop-file-utils eject firefox firefox-locale-en
firefox-locale-nl flashplugin-installer gir1.2-appindicator3-0.1
gir1.2-gst-plugins-base-1.0 gir1.2-gtk-3.0 gnome-software
gnome-software-common grub-common grub-pc grub-pc-bin grub2-common
gstreamer1.0-alsa gstreamer1.0-plugins-base gstreamer1.0-plugins-base-apps
gstreamer1.0-plugins-good gstreamer1.0-pulseaudio gstreamer1.0-x imagemagick
imagemagick-6.q16 libapparmor-perl libarchive13 libevent-2.0-5 libexiv2-14
libgd3 libgstreamer-plugins-base1.0-0 libgstreamer-plugins-good1.0-0
libgtk-3-bin libimage-magick-perl libimage-magick-q16-perl
liblightdm-gobject-1-0 libmagick++-6.q16-5v5 libmagickcore-6.q16-2-extra
libmetacity-private3a libnm-glib-vpn1 libnm-glib4 libnm-gtk-common
libnm-gtk0 libnm-util2 libnm0 libnma-common libnma0 liboxideqt-qmlplugin
liboxideqtcore0 liboxideqtquick0 libpci3 lightdm linux-libc-dev makedev
metacity-common multiarch-support network-manager network-manager-gnome
oxideqt-codecs-extra pciutils python-pil python3-pil resolvconf snap-confine
snapd sni-qt thermald thunderbird thunderbird-gnome-support
thunderbird-locale-en thunderbird-locale-en-gb thunderbird-locale-en-us
thunderbird-locale-nl ubuntu-software wget
75 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
1 not fully installed or removed.
Need to get 0 B/146 MB of archives.
After this operation, 3316 kB of additional disk space will be used.
Do you want to continue? [Y/n] Preconfiguring packages ...
Setting up install-info (6.1.0.dfsg.1-5) ...
/usr/sbin/update-info-dir: 2: /etc/environment: LC_NUMERIC: not found
dpkg: error processing package install-info (--configure):
subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
install-info
答案1
您应该删除/etc/environment除第一行（的设置PATH）之外的所有内容。除了LANG和LC_*变量不属于那里（/etc/default/locale是它们的位置）之外，字符前后的空格=会使条目无效。