这篇博客详细记录了如何在VirtualBox上安装Ubuntu 16.04桌面版，并将系统软件源切换到阿里云镜像以加速下载。接着，博主介绍了如何更新系统并安装Intel Neural Compute Stick (NCS)的相关步骤，包括设置PYTHONPATH环境变量以使用NCSDK。
安装环境：VirtualBox 操作系统：Ubuntu 16.04 Desktop
注：VirtualBox需要安装扩展包，后面需要用到USB3.0
1、安装ubuntu，安装完毕后ubutu系统中切换镜像源，如切换成阿里云等，开始升级ubuntu
sudo apt-get update
sudo apt-get upgrade
#deb包
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
##测试版源
deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
# 源码
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
##测试版源
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse
jaminwm@movidius:~$ cd /etc/apt/
jaminwm@movidius:/etc/apt$ ll
total 48
drwxr-xr-x 6 root root 4096 12月 8 01:21 ./
drwxr-xr-x 133 root root 12288 12月 8 13:52 ../
drwxr-xr-x 2 root root 4096 12月 8 02:39 apt.conf.d/
drwxr-xr-x 2 root root 4096 4月 14 2016 preferences.d/
-rw-rw-r-- 1 root root 2903 12月 8 01:21 sources.list
drwxr-xr-x 2 root root 4096 4月 14 2016 sources.list.d/
-rw-r--r-- 1 root root 12255 3月 1 2018 trusted.gpg
drwxr-xr-x 2 root root 4096 4月 14 2016 trusted.gpg.d/
jaminwm@movidius:/etc/apt$ sudo cp sources.list sources.list.bak
jaminwm@movidius:/etc/apt$ sudo vo sources.list
sudo: vo: command not found
jaminwm@movidius:/etc/apt$ sudo vi sources.list
jaminwm@movidius:/etc/apt$ sudo gedit sources.list
(gedit:4027): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files
** (gedit:4027): WARNING **: Set document metadata failed: Setting attribute metadata::gedit-spell-enabled not supported
** (gedit:4027): WARNING **: Set document metadata failed: Setting attribute metadata::gedit-encoding not supported
** (gedit:4027): WARNING **: Set document metadata failed: Setting attribute metadata::gedit-position not supported
jaminwm@movidius:/etc/apt$ sudo vi sources.list
jaminwm@movidius:/etc/apt$ sudo apt-get update
Get:1 http://mirrors.aliyun.com/ubuntu xenial InRelease [247 kB]
Get:2 http://mirrors.aliyun.com/ubuntu xenial-security InRelease [107 kB]
Get:3 http://mirrors.aliyun.com/ubuntu xenial-updates InRelease [109 kB]
Get:4 http://mirrors.aliyun.com/ubuntu xenial-backports InRelease [107 kB]
Get:5 http://mirrors.aliyun.com/ubuntu xenial-proposed InRelease [260 kB]
Get:6 http://mirrors.aliyun.com/ubuntu xenial/main Sources [868 kB]
Get:7 http://mirrors.aliyun.com/ubuntu xenial/restricted Sources [4,808 B]
Get:8 http://mirrors.aliyun.com/ubuntu xenial/universe Sources [7,728 kB]
Get:9 http://mirrors.aliyun.com/ubuntu xenial/multiverse Sources [179 kB]
Get:10 http://mirrors.aliyun.com/ubuntu xenial/main amd64 Packages [1,201 kB]
Get:11 http://mirrors.aliyun.com/ubuntu xenial/main i386 Packages [1,196 kB]
Get:12 http://mirrors.aliyun.com/ubuntu xenial/main Translation-en [568 kB]
Get:13 http://mirrors.aliyun.com/ubuntu xenial/main amd64 DEP-11 Metadata [733 kB]
Get:14 http://mirrors.aliyun.com/ubuntu xenial/main DEP-11 64x64 Icons [409 kB]
Get:15 http://mirrors.aliyun.com/ubuntu xenial/restricted amd64 Packages [8,344 B]
Get:16 http://mirrors.aliyun.com/ubuntu xenial/restricted i386 Packages [8,684 B]
Get:17 http://mirrors.aliyun.com/ubuntu xenial/restricted Translation-en [2,908 B]
Get:18 http://mirrors.aliyun.com/ubuntu xenial/restricted amd64 DEP-11 Metadata [186 B]
Get:19 http://mirrors.aliyun.com/ubuntu xenial/universe amd64 Packages [7,532 kB]
Get:20 http://mirrors.aliyun.com/ubuntu xenial/universe i386 Packages [7,512 kB]
Get:21 http://mirrors.aliyun.com/ubuntu xenial/universe Translation-en [4,354 kB]
Get:22 http://mirrors.aliyun.com/ubuntu xenial/universe amd64 DEP-11 Metadata [3,410 kB]
Get:23 http://mirrors.aliyun.com/ubuntu xenial/universe DEP-11 64x64 Icons [7,448 kB]
Get:24 http://mirrors.aliyun.com/ubuntu xenial/multiverse amd64 Packages [144 kB]
Get:25 http://mirrors.aliyun.com/ubuntu xenial/multiverse i386 Packages [140 kB]
Get:26 http://mirrors.aliyun.com/ubuntu xenial/multiverse Translation-en [106 kB]
Get:27 http://mirrors.aliyun.com/ubuntu xenial/multiverse amd64 DEP-11 Metadata [63.8 kB]
Get:28 http://mirrors.aliyun.com/ubuntu xenial/multiverse DEP-11 64x64 Icons [230 kB]
Get:29 http://mirrors.aliyun.com/ubuntu xenial-security/main Sources [138 kB]
Get:30 http://mirrors.aliyun.com/ubuntu xenial-security/restricted Sources [2,116 B]
Get:31 http://mirrors.aliyun.com/ubuntu xenial-security/universe Sources [88.8 kB]
Get:32 http://mirrors.aliyun.com/ubuntu xenial-security/multiverse Sources [2,472 B]
Get:33 http://mirrors.aliyun.com/ubuntu xenial-security/main amd64 Packages [588 kB]
Get:34 http://mirrors.aliyun.com/ubuntu xenial-security/main i386 Packages [501 kB]
Get:35 http://mirrors.aliyun.com/ubuntu xenial-security/main Translation-en [245 kB]
Get:36 http://mirrors.aliyun.com/ubuntu xenial-security/main amd64 DEP-11 Metadata [67.7 kB]
Get:37 http://mirrors.aliyun.com/ubuntu xenial-security/main DEP-11 64x64 Icons [68.0 kB]
Get:38 http://mirrors.aliyun.com/ubuntu xenial-security/restricted amd64 Packages [7,204 B]
Get:39 http://mirrors.aliyun.com/ubuntu xenial-security/restricted i386 Packages [7,224 B]
Get:40 http://mirrors.aliyun.com/ubuntu xenial-security/restricted Translation-en [2,152 B]
Get:41 http://mirrors.aliyun.com/ubuntu xenial-security/restricted amd64 DEP-11 Metadata [200 B]
Get:42 http://mirrors.aliyun.com/ubuntu xenial-security/universe amd64 Packages [403 kB]
Get:43 http://mirrors.aliyun.com/ubuntu xenial-security/universe i386 Packages [349 kB]
Get:44 http://mirrors.aliyun.com/ubuntu xenial-security/universe Translation-en [157 kB]
Get:45 http://mirrors.aliyun.com/ubuntu xenial-security/universe amd64 DEP-11 Metadata [109 kB]
Get:46 http://mirrors.aliyun.com/ubuntu xenial-security/universe DEP-11 64x64 Icons [154 kB]
Get:47 http://mirrors.aliyun.com/ubuntu xenial-security/multiverse amd64 Packages [3,724 B]
Get:48 http://mirrors.aliyun.com/ubuntu xenial-security/multiverse i386 Packages [3,888 B]
Get:49 http://mirrors.aliyun.com/ubuntu xenial-security/multiverse Translation-en [1,844 B]
Get:50 http://mirrors.aliyun.com/ubuntu xenial-security/multiverse amd64 DEP-11 Metadata [212 B]
Get:51 http://mirrors.aliyun.com/ubuntu xenial-security/multiverse DEP-11 64x64 Icons [29 B]
Get:52 http://mirrors.aliyun.com/ubuntu xenial-updates/main Sources [327 kB]
Get:53 http://mirrors.aliyun.com/ubuntu xenial-updates/restricted Sources [2,528 B]
Get:54 http://mirrors.aliyun.com/ubuntu xenial-updates/universe Sources [235 kB]
Get:55 http://mirrors.aliyun.com/ubuntu xenial-updates/multiverse Sources [8,744 B]
Get:56 http://mirrors.aliyun.com/ubuntu xenial-updates/main amd64 Packages [892 kB]
Get:57 http://mirrors.aliyun.com/ubuntu xenial-updates/main i386 Packages [789 kB]
Get:58 http://mirrors.aliyun.com/ubuntu xenial-updates/main Translation-en [361 kB]
Get:59 http://mirrors.aliyun.com/ubuntu xenial-updates/main amd64 DEP-11 Metadata [320 kB]
Get:60 http://mirrors.aliyun.com/ubuntu xenial-updates/main DEP-11 64x64 Icons [229 kB]
Get:61 http://mirrors.aliyun.com/ubuntu xenial-updates/restricted amd64 Packages [7,556 B]
Get:62 http://mirrors.aliyun.com/ubuntu xenial-updates/restricted i386 Packages [7,524 B]
Get:63 http://mirrors.aliyun.com/ubuntu xenial-updates/restricted Translation-en [2,272 B]
Get:64 http://mirrors.aliyun.com/ubuntu xenial-updates/restricted amd64 DEP-11 Metadata [157 B]
Get:65 http://mirrors.aliyun.com/ubuntu xenial-updates/universe amd64 Packages [710 kB]
Get:66 http://mirrors.aliyun.com/ubuntu xenial-updates/universe i386 Packages [650 kB]
Get:67 http://mirrors.aliyun.com/ubuntu xenial-updates/universe Translation-en [290 kB]
Get:68 http://mirrors.aliyun.com/ubuntu xenial-updates/universe amd64 DEP-11 Metadata [248 kB]
Get:69 http://mirrors.aliyun.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons [337 kB]
Get:70 http://mirrors.aliyun.com/ubuntu xenial-updates/multiverse amd64 Packages [16.6 kB]
Get:71 http://mirrors.aliyun.com/ubuntu xenial-updates/multiverse i386 Packages [15.7 kB]
Get:72 http://mirrors.aliyun.com/ubuntu xenial-updates/multiverse Translation-en [8,440 B]
Get:73 http://mirrors.aliyun.com/ubuntu xenial-updates/multiverse amd64 DEP-11 Metadata [5,960 B]
Get:74 http://mirrors.aliyun.com/ubuntu xenial-updates/multiverse DEP-11 64x64 Icons [14.3 kB]
Get:75 http://mirrors.aliyun.com/ubuntu xenial-backports/main Sources [4,856 B]
Get:76 http://mirrors.aliyun.com/ubuntu xenial-backports/universe Sources [6,740 B]
Get:77 http://mirrors.aliyun.com/ubuntu xenial-backports/main amd64 Packages [7,288 B]
Get:78 http://mirrors.aliyun.com/ubuntu xenial-backports/main i386 Packages [7,292 B]
Get:79 http://mirrors.aliyun.com/ubuntu xenial-backports/main Translation-en [4,456 B]
Get:80 http://mirrors.aliyun.com/ubuntu xenial-backports/main amd64 DEP-11 Metadata [3,328 B]
Get:81 http://mirrors.aliyun.com/ubuntu xenial-backports/main DEP-11 64x64 Icons [29 B]
Get:82 http://mirrors.aliyun.com/ubuntu xenial-backports/restricted amd64 DEP-11 Metadata [194 B]
Get:83 http://mirrors.aliyun.com/ubuntu xenial-backports/universe amd64 Packages [7,804 B]
Get:84 http://mirrors.aliyun.com/ubuntu xenial-backports/universe i386 Packages [7,488 B]
Get:85 http://mirrors.aliyun.com/ubuntu xenial-backports/universe Translation-en [4,184 B]
Get:86 http://mirrors.aliyun.com/ubuntu xenial-backports/universe amd64 DEP-11 Metadata [5,104 B]
Get:87 http://mirrors.aliyun.com/ubuntu xenial-backports/universe DEP-11 64x64 Icons [1,789 B]
Get:88 http://mirrors.aliyun.com/ubuntu xenial-backports/multiverse amd64 DEP-11 Metadata [216 B]
Get:89 http://mirrors.aliyun.com/ubuntu xenial-backports/multiverse DEP-11 64x64 Icons [29 B]
Get:90 http://mirrors.aliyun.com/ubuntu xenial-proposed/main Sources [16.9 kB]
Get:91 http://mirrors.aliyun.com/ubuntu xenial-proposed/universe Sources [8,664 B]
Get:92 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 Packages [48.4 kB]
Get:93 http://mirrors.aliyun.com/ubuntu xenial-proposed/main i386 Packages [38.4 kB]
Get:94 http://mirrors.aliyun.com/ubuntu xenial-proposed/main Translation-en [20.7 kB]
Get:95 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 DEP-11 Metadata [6,272 B]
Get:96 http://mirrors.aliyun.com/ubuntu xenial-proposed/main DEP-11 64x64 Icons [6,118 B]
Get:97 http://mirrors.aliyun.com/ubuntu xenial-proposed/restricted amd64 DEP-11 Metadata [201 B]
Get:98 http://mirrors.aliyun.com/ubuntu xenial-proposed/universe amd64 Packages [16.5 kB]
Get:99 http://mirrors.aliyun.com/ubuntu xenial-proposed/universe i386 Packages [13.8 kB]
Get:100 http://mirrors.aliyun.com/ubuntu xenial-proposed/universe Translation-en [9,892 B]
Get:101 http://mirrors.aliyun.com/ubuntu xenial-proposed/universe amd64 DEP-11 Metadata [796 B]
Get:102 http://mirrors.aliyun.com/ubuntu xenial-proposed/universe DEP-11 64x64 Icons [2,085 B]
Get:103 http://mirrors.aliyun.com/ubuntu xenial-proposed/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:104 http://mirrors.aliyun.com/ubuntu xenial-proposed/multiverse DEP-11 64x64 Icons [2,638 B]
Fetched 53.3 MB in 16s (3,190 kB/s)
AppStream cache update completed, but some metadata was ignored due to errors.
Reading package lists... Done
jaminwm@movidius:/etc/apt$ sudo apt-get update
Hit:1 http://mirrors.aliyun.com/ubuntu xenial InRelease
Hit:2 http://mirrors.aliyun.com/ubuntu xenial-security InRelease
Hit:3 http://mirrors.aliyun.com/ubuntu xenial-updates InRelease
Hit:4 http://mirrors.aliyun.com/ubuntu xenial-backports InRelease
Hit:5 http://mirrors.aliyun.com/ubuntu xenial-proposed InRelease
Reading package lists... Done
jaminwm@movidius:/etc/apt$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following package was automatically installed and is no longer required:
libllvm5.0
Use 'sudo apt autoremove' to remove it.
The following packages will be upgraded:
cpp-5 g++-5 gcc-5 gcc-5-base grub-common grub-pc grub-pc-bin grub2-common kmod libasan2 libatomic1 libcc1-0 libcilkrts5 libgcc-5-dev libgomp1 libitm1 libkmod2 liblsan0 libmpx0
libprotobuf-lite9v5 libprotobuf9v5 libquadmath0 libstdc++-5-dev libstdc++6 libtsan0 libubsan0 linux-libc-dev python-apt-common python3-apt snapd ubuntu-core-launcher unattended-upgrades
update-notifier update-notifier-common
34 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 48.8 MB of archives.
After this operation, 4,873 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 grub-pc amd64 2.02~beta2-36ubuntu3.20 [197 kB]
Get:2 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 grub2-common amd64 2.02~beta2-36ubuntu3.20 [513 kB]
Get:3 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 grub-pc-bin amd64 2.02~beta2-36ubuntu3.20 [889 kB]
Get:4 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 grub-common amd64 2.02~beta2-36ubuntu3.20 [1,704 kB]
Get:5 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 ubuntu-core-launcher amd64 2.35.5 [1,560 B]
Get:6 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 snapd amd64 2.35.5 [14.2 MB]
Get:7 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 update-notifier amd64 3.168.10 [47.2 kB]
Get:8 http://mirrors.aliyun.com/ubuntu xenial-proposed/main amd64 libcc1-0 amd64 5.4.0-6ubuntu1~16.04.11 [38.8 kB]
Get:9 http://mirrors.aliyun.com/ubun
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