source: BOOK/final-preps/common/addinguser.xml @ f6cb7c6

clfs-3.0.0-sysvinitsysvinit
Last change on this file since f6cb7c6 was f6cb7c6, checked in by Chris Staub <chris@…>, 9 years ago

Specify root for more commands

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4  <!ENTITY % general-entities SYSTEM "../../general.ent">
5  %general-entities;
6]>
7
8<sect1 id="ch-final-preps-addinguser">
9  <?dbhtml filename="addinguser.html"?>
10
11  <title>Adding the CLFS User</title>
12
13  <para>When logged in as user <systemitem class="username">root</systemitem>,
14  making a single mistake can damage or destroy a system. Therefore, we
15  recommend building the packages as an unprivileged user.
16  You could use your own user name, but to make it easier to set up a clean
17  work environment, create a new user called <systemitem
18  class="username">clfs</systemitem> as a member of a new group (also named
19  <systemitem class="groupname">clfs</systemitem>) and use this user during
20  the installation process. As <systemitem class="username">root</systemitem>,
21  issue the following commands to add the new user:</para>
22
23<screen><userinput>groupadd clfs
24useradd -s /bin/bash -g clfs -d /home/clfs clfs
25mkdir -pv /home/clfs
26chown -v clfs:clfs /home/clfs</userinput></screen>
27
28  <variablelist>
29    <title>The meaning of the command line options:</title>
30
31    <varlistentry>
32      <term><parameter>-s /bin/bash</parameter></term>
33      <listitem>
34        <para>This makes <command>bash</command> the default shell for
35        user <systemitem class="username">clfs</systemitem>.</para>
36
37        <important>
38          <para>The build instructions assume that the <command>bash</command>
39          shell is in use.</para>
40        </important>
41
42      </listitem>
43    </varlistentry>
44
45    <varlistentry>
46      <term><parameter>-g clfs</parameter></term>
47      <listitem>
48        <para>This option adds the new user to the
49        <systemitem class="groupname">clfs</systemitem> group.</para>
50      </listitem>
51    </varlistentry>
52
53    <varlistentry>
54      <term><parameter>-d /home/clfs</parameter></term>
55      <listitem>
56        <para>This option sets the user's home directory, but does not create
57        it. We could have used <option>-m</option> to tell
58        <command>useradd</command> to create the directory as well, but this
59        would also copy whatever is in the host system's
60        <filename class="directory">/etc/skel</filename> directory into the new
61        user's home. We would prefer to have a clean user environment, so we
62        just create an empty directory after adding the user.</para>
63      </listitem>
64    </varlistentry>
65
66    <varlistentry>
67      <term><parameter>clfs</parameter></term>
68      <listitem>
69        <para>This is the actual name for the created group and user.</para>
70      </listitem>
71    </varlistentry>
72
73  </variablelist>
74
75  <para>To log in as <systemitem class="username">clfs</systemitem> (as
76  opposed to switching to user <systemitem class="username">clfs</systemitem>
77  when logged in as <systemitem class="username">root</systemitem>, which
78  does not require the <systemitem class="username">clfs</systemitem> user
79  to have a password), give <systemitem class="username">clfs</systemitem>
80  a password:</para>
81
82<screen><userinput>passwd clfs</userinput></screen>
83
84  <para>As <systemitem class="username">root</systemitem>,
85  grant <systemitem class="username">clfs</systemitem> full access to
86  <filename class="directory">${CLFS}/cross-tools</filename> and
87  <filename class="directory">${CLFS}/tools</filename> by making <systemitem
88  class="username">clfs</systemitem> the directorys' owner:</para>
89
90<screen><userinput>chown -v clfs ${CLFS}/tools
91chown -v clfs ${CLFS}/cross-tools</userinput></screen>
92
93  <para>If a separate working directory was created as suggested, run the
94  following command as <systemitem class="username">root</systemitem> to
95  give user <systemitem class="username">clfs</systemitem> ownership of this
96  directory as well:</para>
97
98<screen><userinput>chown -v clfs ${CLFS}/sources</userinput></screen>
99
100  <para>Next, login as user <systemitem class="username">clfs</systemitem>.
101  This can be done via a virtual console, through a display manager, or
102  with the following substitute user command:</para>
103
104<screen><userinput>su - clfs</userinput></screen>
105
106  <para>The <quote><parameter>-</parameter></quote> instructs
107  <command>su</command> to start a login shell as opposed to a non-login
108  shell. The difference between these two types of shells can be found
109  in detail in <filename>bash(1)</filename> and <command>info
110  bash</command>.</para>
111
112  <note>
113    <para>Until specified otherwise, all commands from this point on
114    should be done as the <systemitem class="username">clfs</systemitem>
115    user.</para>
116  </note>
117
118</sect1>
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