blocks|key|5832277|text|sudo+usermod+-aG+sudo+<username>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|5832278|a是非常重要的。没有它，他们将被从所有其他组中移除。您需要重新启动shell/终端，或者注销或返回，这样才能生效。|unstyled|offset|length|style|CODE|5832279|另请参阅：|5832280|如何使用命令行将新用户添加为sudoer？|unordered-list-item|entityMap|0|LINK|mutability|MUTABLE|url|https://askubuntu.com/questions/7477/how-can-i-add-a-new-user-as-sudoer-using-the-command-line^0|0|0|1|0|0|0|L|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|X|8|@$G|Y|H|Z|I|J]]|9|@]|A|$]]|$1|K|3|L|5|F|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|11|8|@]|9|@$G|12|H|13|1|14]]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]]]

<pre><code>sudo usermod -aG sudo &lt;username&gt;
</code></pre>

The <code>a</code> is very important. Without it they'll be removed from all other groups. You will need to either restart your shell/terminal or log out and back in for this to take effect. 

See also: 

<ul>
<li><a href="https://askubuntu.com/questions/7477/how-can-i-add-a-new-user-as-sudoer-using-the-command-line">How can I add a new user as sudoer using the command line?</a></li>
</ul>

blocks|key|4640803|text|您可以为此使用用户管理GUI+(创建用户的位置相同)，也可以在命令行中使用sudo+adduser+<username>+sudo。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|entityMap^0|11|S^^$0|@$1|2|3|4|5|6|7|G|8|@$9|H|A|I|B|C]]|D|@]|E|$]]]|F|$]]

You can either use the user management GUI for it (same place where you create users), or use <code>sudo adduser &lt;username&gt; sudo</code> in the command line.

blocks|key|4640949|text|您还可以使用图形界面。单击面板右上角的齿轮，然后选择“系统设置”，然后选择“用户帐户”|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4640950|你需要点击小解锁按钮，才能编辑这个窗口中的东西。然后单击该人的帐户并为“帐户类型”选择适当的下拉列表|4640951|📷|atomic|offset|length|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://i.stack.imgur.com/3fsUZ.png|imageAlt^0|0|0|0|1|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@$G|T|H|U|1|V]]|A|$]]]|I|$J|$5|K|L|M|A|$N|O|P|-4]]]]

You can also use a graphical interface. Click on the gear on the top right of the panel, then select "System Settings" and then "User Accounts"

You need to click the little unlock button to be able to edit things in this window. Then click on the person's account and select the proper dropdown for "Account Type"

<img src="https://i.stack.imgur.com/3fsUZ.png" alt="enter image description here">

blocks|key|5832310|text|sudo+gpasswd+-a+$USER+sudo|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|entityMap^0|0|Q^^$0|@$1|2|3|4|5|6|7|G|8|@$9|H|A|I|B|C]]|D|@]|E|$]]]|F|$]]

<code>sudo gpasswd -a $USER sudo</code>

blocks|key|5832383|text|我在派对上迟到了，但这个答案可能会帮助那些在Docker容器中使用Ubuntu的人。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5832384|最近，我基于Ubuntu16.04.1创建了一个Docker容器。|5832385|默认情况下，Docker映像是Ubuntu的简化版本，它没有包括sudo在内的绝大多数通用工具。|offset|length|style|CODE|5832386|此外，默认情况下，用户以root身份登录到Docker容器。|5832387|因此，我使用docker+run命令启动了容器，并安装了'sudo‘包：|5832388|root@default:/#+apt-get+install+sudo|code-block|syntax|javascript|5832389|运行命令adduser+myuser+sudo报告错误adduser:+The+user+'myuser'+does+not+exist.。在阅读这个回答之后，我首先运行命令来创建用户：|5832390|root@default:/#+adduser+myuser|5832391|然后运行以下命令：|5832392|root@default:/#+adduser+myuser+sudo
Adding+user+`myuser'+to+group+`sudo'+...
Adding+user+myuser+to+group+sudo
Done.|5832393|用户myuser已成功地添加到sudo组中。|entityMap|0|LINK|mutability|MUTABLE|url|https://askubuntu.com/a/389849/333806^0|0|0|W|4|0|0|6|A|0|0|4|J|R|16|23|2|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1A|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1B|8|@$F|1C|G|1D|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|1E|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1F|8|@$F|1G|G|1H|H|I]]|9|@]|A|$]]|$1|N|3|O|5|P|7|1I|8|@]|9|@]|A|$Q|R]]|$1|S|3|T|5|6|7|1J|8|@$F|1K|G|1L|H|I]|$F|1M|G|1N|H|I]]|9|@$F|1O|G|1P|1|1Q]]|A|$]]|$1|U|3|V|5|P|7|1R|8|@]|9|@]|A|$Q|R]]|$1|W|3|X|5|6|7|1S|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|P|7|1T|8|@]|9|@]|A|$Q|R]]|$1|10|3|11|5|6|7|1U|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]]]

I am late to the party, but this answer might help someone that uses Ubuntu inside a Docker container.

I recently created a Docker container based on Ubuntu 16.04.1.

By default, the Docker Ubuntu image is a stripped down version of Ubuntu, which does not have a vast majority of common tools including <code>sudo</code>.

Besides, by default, the user is logged in to the Docker container as root.

Therefore, I started the container with the <code>docker run</code> command, and installed the 'sudo' package:

<pre><code>root@default:/# apt-get install sudo
</code></pre>

Running the command <code>adduser myuser sudo</code> reported error <code>adduser: The user 'myuser' does not exist.</code>.
After reading this <a href="https://askubuntu.com/a/389849/333806">answer</a>, I first ran the command to create the user:

<pre><code>root@default:/# adduser myuser
</code></pre>

Then ran the following command:

<pre><code>root@default:/# adduser myuser sudo
Adding user `myuser' to group `sudo' ...
Adding user myuser to group sudo
Done.
</code></pre>

The user myuser was successfully added to the sudo group.

blocks|key|4641185|text|下面是如何使用ubuntu:18.04的基本映像设置一个非根用户：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4641186|RUN+\
++++groupadd+-g+999+foo+&&+useradd+-u+999+-g+foo+-G+sudo+-m+-s+/bin/bash+foo+&&+\
++++sed+-i+/etc/sudoers+-re+'s/%5E%25sudo.*/%25sudo+ALL=(ALL:ALL)+NOPASSWD:+ALL/g'+&&+\
++++sed+-i+/etc/sudoers+-re+'s/%5Eroot.*/root+ALL=(ALL:ALL)+NOPASSWD:+ALL/g'+&&+\
++++sed+-i+/etc/sudoers+-re+'s/%5E#includedir.*/##+**Removed+the+include+directive**+##"/g'+&&+\
++++echo+"foo+ALL=(ALL)+NOPASSWD:+ALL"+>>+/etc/sudoers+&&+\
++++echo+"Customized+the+sudoers+file+for+passwordless+access+to+the+foo+user!"+&&+\
++++echo+"foo+user:";++su+-+foo+-c+id|code-block|syntax|javascript|4641187|上面的代码会发生什么：|4641188|创建了用户和组foo。|unordered-list-item|4641189|用户foo被添加到foo和sudo组中。|4641190|uid和gid被设置为999的值。|4641191|主目录设置为/home/foo。|4641192|外壳设置为/bin/bash。|4641193|sed命令对/etc/sudoers文件进行内联更新，以允许foo和root用户对sudo组进行无密码访问。|4641194|sed命令禁用允许子目录中的任何文件覆盖这些内联更新的#includedir指令。|entityMap^0|7|C|0|0|0|7|3|0|2|3|9|3|D|4|0|0|3|4|3|B|3|0|6|9|0|5|9|0|0|3|6|C|U|3|Y|4|15|4|0|0|3|R|B^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|15|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|D|@]|E|$]]|$1|M|3|N|5|O|7|17|8|@$9|18|A|19|B|C]]|D|@]|E|$]]|$1|P|3|Q|5|O|7|1A|8|@$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]]|D|@]|E|$]]|$1|R|3|S|5|O|7|1H|8|@$9|1I|A|1J|B|C]|$9|1K|A|1L|B|C]|$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|T|3|U|5|O|7|1O|8|@$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|V|3|W|5|O|7|1R|8|@$9|1S|A|1T|B|C]]|D|@]|E|$]]|$1|X|3|Y|5|O|7|1U|8|@$9|1V|A|1W|B|C]|$9|1X|A|1Y|B|C]|$9|1Z|A|20|B|C]|$9|21|A|22|B|C]|$9|23|A|24|B|C]]|D|@]|E|$]]|$1|Z|3|10|5|O|7|25|8|@$9|26|A|27|B|C]|$9|28|A|29|B|C]]|D|@]|E|$]]]|11|$]]

Here's how I setup a non-root user with the base image of <code>ubuntu:18.04</code>:

<pre><code>RUN \
 groupadd -g 999 foo &amp;&amp; useradd -u 999 -g foo -G sudo -m -s /bin/bash foo &amp;&amp; \
 sed -i /etc/sudoers -re 's/^%sudo.*/%sudo ALL=(ALL:ALL) NOPASSWD: ALL/g' &amp;&amp; \
 sed -i /etc/sudoers -re 's/^root.*/root ALL=(ALL:ALL) NOPASSWD: ALL/g' &amp;&amp; \
 sed -i /etc/sudoers -re 's/^#includedir.*/## **Removed the include directive** ##"/g' &amp;&amp; \
 echo "foo ALL=(ALL) NOPASSWD: ALL" &gt;&gt; /etc/sudoers &amp;&amp; \
 echo "Customized the sudoers file for passwordless access to the foo user!" &amp;&amp; \
 echo "foo user:"; su - foo -c id
</code></pre>

What happens with the above code:

<ul>
<li>The user and group <code>foo</code> is created.</li>
<li>The user <code>foo</code> is added to the both the <code>foo</code> and <code>sudo</code> group.</li>
<li>The <code>uid</code> and <code>gid</code> is set to the value of <code>999</code>.</li>
<li>The home directory is set to <code>/home/foo</code>. </li>
<li>The shell is set to <code>/bin/bash</code>.</li>
<li>The <code>sed</code> command does inline updates to the <code>/etc/sudoers</code> file to allow <code>foo</code> and <code>root</code> users passwordless access to the <code>sudo</code> group.</li>
<li>The <code>sed</code> command disables the <code>#includedir</code> directive that would allow any files in subdirectories to override these inline updates. </li>
</ul>

In <code>/etc/sudoers</code> I see this:

<pre><code># Allow members of group sudo to execute any command after they have
# provided their password
# (Note that later entries override this, so you might need to move
# it further down)
%sudo ALL=(ALL) ALL
</code></pre>

So how do I add a user to that <code>sudo</code> group?

How do I add a user to the "sudo" group?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在/etc/sudoers中，我看到了以下内容：# Allow members of group sudo to execute any command after they have# provided their password# (Note that later entries override this, so you might need to move# it further dow

问如何将用户添加到"sudo“组？
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