[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
---|
[1770019] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
|
---|
[673b0d8] | 3 | <!ENTITY % general-entities SYSTEM "../general.ent">
|
---|
| 4 | %general-entities;
|
---|
| 5 | ]>
|
---|
| 6 | <sect1 id="ch-tools-addinguser">
|
---|
[bce08ef] | 7 | <title>Adding the LFS User</title>
|
---|
[673b0d8] | 8 | <?dbhtml filename="addinguser.html"?>
|
---|
| 9 |
|
---|
[81fd230] | 10 | <para>When logged in as user <emphasis>root</emphasis>, making a
|
---|
| 11 | single mistake can damage or destroy a system. Therefore, we recommend
|
---|
| 12 | building the packages in this chapter as an unprivileged user. You
|
---|
| 13 | could use your own user name, but to make it easier to set up a clean
|
---|
| 14 | work environment, create a new user called <emphasis>lfs</emphasis> as
|
---|
| 15 | a member of a new group (also named <emphasis>lfs</emphasis>) and use
|
---|
| 16 | this user during the installation process. As
|
---|
| 17 | <emphasis>root</emphasis>, issue the following commands to add the new
|
---|
| 18 | user:</para>
|
---|
[673b0d8] | 19 |
|
---|
[1fd5d19] | 20 | <screen><userinput>groupadd lfs
|
---|
| 21 | useradd -s /bin/bash -g lfs -m -k /dev/null lfs</userinput></screen>
|
---|
[673b0d8] | 22 |
|
---|
[81fd230] | 23 | <para>The meaning of the command line options:</para>
|
---|
| 24 |
|
---|
| 25 | <variablelist>
|
---|
| 26 | <varlistentry>
|
---|
| 27 | <term><parameter>-s /bin/bash</parameter></term>
|
---|
| 28 | <listitem><para>This makes
|
---|
| 29 | <command>bash</command> the default shell for user
|
---|
| 30 | <emphasis>lfs</emphasis>.</para></listitem>
|
---|
| 31 | </varlistentry>
|
---|
| 32 |
|
---|
| 33 | <varlistentry>
|
---|
| 34 | <term><parameter>-g lfs</parameter></term>
|
---|
| 35 | <listitem><para>This option adds user <emphasis>lfs</emphasis> to group
|
---|
| 36 | <emphasis>lfs</emphasis>.</para></listitem>
|
---|
| 37 | </varlistentry>
|
---|
| 38 |
|
---|
| 39 | <varlistentry>
|
---|
| 40 | <term><parameter>-m</parameter></term>
|
---|
| 41 | <listitem><para>This creates a home
|
---|
| 42 | directory for <emphasis>lfs</emphasis>.</para></listitem>
|
---|
| 43 | </varlistentry>
|
---|
| 44 |
|
---|
| 45 | <varlistentry>
|
---|
| 46 | <term><parameter>-k /dev/null</parameter></term>
|
---|
| 47 | <listitem><para>This parameter
|
---|
| 48 | prevents possible copying of files from a skeleton directory (default
|
---|
| 49 | is <filename class="directory">/etc/skel</filename>) by changing the input location to
|
---|
| 50 | the special null device.</para></listitem>
|
---|
| 51 | </varlistentry>
|
---|
| 52 |
|
---|
| 53 | <varlistentry>
|
---|
| 54 | <term><parameter>lfs</parameter></term>
|
---|
| 55 | <listitem><para>This is the actual name for the created group and
|
---|
| 56 | user.</para></listitem>
|
---|
| 57 | </varlistentry>
|
---|
| 58 | </variablelist>
|
---|
| 59 |
|
---|
| 60 | <para>To log in as <emphasis>lfs</emphasis> (as opposed to switching
|
---|
| 61 | to user <emphasis>lfs</emphasis> when
|
---|
| 62 | logged in as <emphasis>root</emphasis>, which does not require the
|
---|
| 63 | <emphasis>lfs</emphasis> user to have a
|
---|
| 64 | password), give <emphasis>lfs</emphasis> a password:</para>
|
---|
| 65 |
|
---|
[673b0d8] | 66 | <screen><userinput>passwd lfs</userinput></screen>
|
---|
| 67 |
|
---|
[81fd230] | 68 | <para>Grant <emphasis>lfs</emphasis> full access to
|
---|
| 69 | <filename class="directory">$LFS/tools</filename> by making
|
---|
| 70 | <emphasis>lfs</emphasis> the directory owner:</para>
|
---|
| 71 |
|
---|
[673b0d8] | 72 | <screen><userinput>chown lfs $LFS/tools</userinput></screen>
|
---|
| 73 |
|
---|
[81fd230] | 74 | <para>If a separate working directory was created as suggested, give
|
---|
| 75 | user <emphasis>lfs</emphasis> ownership of this directory:</para>
|
---|
| 76 |
|
---|
[673b0d8] | 77 | <screen><userinput>chown lfs $LFS/sources</userinput></screen>
|
---|
| 78 |
|
---|
[81fd230] | 79 | <para>Next, login as user <emphasis>lfs</emphasis>. This can be done
|
---|
| 80 | via a virtual console, through a display manager, or with the
|
---|
| 81 | following substitute user command:</para>
|
---|
| 82 |
|
---|
[673b0d8] | 83 | <screen><userinput>su - lfs</userinput></screen>
|
---|
| 84 |
|
---|
[81fd230] | 85 | <para>The <quote><parameter>-</parameter></quote> instructs
|
---|
| 86 | <command>su</command> to start a login shell as opposed to a non-login
|
---|
| 87 | shell. The difference between these two types of shells can be found
|
---|
| 88 | in detail in the Bash man and info pages.</para>
|
---|
| 89 |
|
---|
[673b0d8] | 90 | </sect1>
|
---|
[81fd230] | 91 |
|
---|