Ubuntu Locale
archlinux: systemd

$ systemctl --failed
$ systemctl --all
$ systemctl list-unit-files

FAQ

1. check which locales are supported:
$ locale -a

2. add the locales you want (for example ru):
$ sudo locale-gen ru_RU
$ sudo locale-gen ru_RU.UTF-8

3. run this update comand
$ sudo update-locale 

or

$ sudo dpkg-reconfigure locales
$ sudo dpkg-reconfigure tzdata

$ systemctl status
<E2><97><8F> ubuntu1
    State: running
     Jobs: 0 queued
   Failed: 0 units
    Since: Wed 2016-08-31 15:23:26 CEST; 21h ago
   CGroup: /
           <E2><94><9C><E2><94><80>1 /sbin/init
           <E2><94><9C><E2><94><80>system.slice
[...]

# cat /etc/default/locale 
LANG="en_US.UTF-8"
LANGUAGE="en_US:en"

# cat /etc/environment 
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"

$ locale
locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_US.UTF-8
LANGUAGE=en_US:en
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=de_CH.UTF-8
LC_TIME=de_CH.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=de_CH.UTF-8
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=de_CH.UTF-8
LC_NAME=de_CH.UTF-8
LC_ADDRESS=de_CH.UTF-8
LC_TELEPHONE=de_CH.UTF-8
LC_MEASUREMENT=de_CH.UTF-8
LC_IDENTIFICATION=de_CH.UTF-8
LC_ALL=

# for y in $(locale | cut -d '=' -f 2| sort |uniq );do locale-gen $y; done
locale: Cannot set LC_ALL to default locale: No such file or directory
Generating locales...
  de_CH.UTF-8... done
Generation complete.
Generating locales...
  en_US.UTF-8... done
Generation complete.

# dpkg-reconfigure locales
Generating locales...
  de_CH.UTF-8... done
  en_AG.UTF-8... done
  en_AU.UTF-8... done
  en_BW.UTF-8... done
  en_CA.UTF-8... done
  en_DK.UTF-8... done
  en_GB.UTF-8... done
  en_HK.UTF-8... done
  en_IE.UTF-8... done
  en_IN.UTF-8... done
  en_NG.UTF-8... done
  en_NZ.UTF-8... done
  en_PH.UTF-8... done
  en_SG.UTF-8... done
  en_US.UTF-8... up-to-date
  en_ZA.UTF-8... done
  en_ZM.UTF-8... done
  en_ZW.UTF-8... done
Generation complete.

# systemctl status
● ubuntu1
    State: running
     Jobs: 0 queued
   Failed: 0 units
    Since: Mit 2016-08-31 15:23:26 CEST; 21h ago
   CGroup: /
           ├─1 /sbin/init
           ├─system.slice