我改变了配置：
/etc/ssh/sshd_config
但更改仅在重新启动服务器后应用。如何在不重新启动的情况下应用更改？
Ubuntu 服务器显示我几乎使用了所有磁盘：
Usage of /: 95.5% of 118.12GB
我尝试查找大文件夹和文件，运行 ncdu：
ncdu 1.8 ~ Use the arrow keys to navigate, press ? for help
--- / ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
5.5GiB [##########] /root
2.3GiB [#### ] /var
628.6MiB [# ] /usr
209.9MiB [ ] /lib
28.2MiB [ ] /boot
8.6MiB [ ] /bin
7.7MiB [ ] /sbin
6.6MiB [ ] /etc
208.0KiB [ ] /run
112.0KiB [ ] /tmp
48.0KiB [ ] /opt
e 16.0KiB [ ] /lost+found
8.0KiB [ ] /dev
8.0KiB [ …如何使 USB 显示器Lenovo Think Vision lt1421在 ubuntu 上工作。在官方网站上，我看到仅适用于Windows 的驱动程序。当我插入时：未检测到。在 Windows 上它运行良好。
我dbpath在 mongodb 配置文件中设置：
#dbpath=/var/lib/mongodb
dbpath=~/data/db
然后尝试启动 mongodb 但出现错误：
ERROR: dbpath (~/data/db) does not exist.
虽然我可以检查~/data/db容易的存在：
# cd ~/data/db
user@server:~/data/db# pwd
/root/data/db
当我运行它...
# mongod --dbpath ~/data/db
...得到输出：
Tue Oct 15 05:05:49.040 [initandlisten] MongoDB starting : pid=3786 port=27017 dbpath=/root/data/db 64-bit host=callzone2
Tue Oct 15 05:05:49.040 [initandlisten] db version v2.4.6
Tue Oct 15 05:05:49.040 [initandlisten] git version: b9925db5eac369d77a3a5f5d98a145eaaacd9673
Tue Oct 15 05:05:49.041 [initandlisten] build info: Linux ip-10-2-29-40 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_49 …我正在尝试像这里一样安装 redis 。但是当 do make，得到错误 unsupported locale setting:
# make
Sorry, command-not-found has crashed! Please file a bug report at:
https://bugs.launchpad.net/command-not-found/+filebug
Please include the following information with the report:
command-not-found version: 0.3
Python version: 3.3.1 final 0
Distributor ID: Ubuntu
Description: Ubuntu 13.04
Release: 13.04
Codename: raring
Exception information:
unsupported locale setting
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/CommandNotFound/util.py", line 24, in crash_guard
callback()
File "/usr/lib/command-not-found", line 69, in main
enable_i18n()
File "/usr/lib/command-not-found", line 40, in enable_i18n …