| 1 | <sect1 id="ch06-pwdgroup">
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| 2 | <title>Creating the passwd and group files</title>
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| 3 | <?dbhtml filename="pwdgroup.html" dir="chapter06"?>
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| 4 |
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| 5 | <para>In order for <emphasis>root</emphasis> to be able to login and for the
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| 6 | name "root" to be recognized, there need to be relevant entries in the
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| 7 | <filename>/etc/passwd</filename> and <filename>/etc/group</filename> files.
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| 8 | Also, to support one of the coreutils tests, we will also create the user and
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| 9 | group nobody, which is almost universally present on Linux computers.</para>
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| 10 |
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| 11 | <para>Create the <filename>/etc/passwd</filename> file by running the following
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| 12 | command:</para>
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| 13 |
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| 14 | <para><screen><userinput>cat > /etc/passwd << "EOF"</userinput>
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| 15 | root:x:0:0:root:/root:/bin/bash
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| 16 | nobody:x:1000:1000:nobody:/:/bin/bash
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| 17 | <userinput>EOF</userinput></screen></para>
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| 18 |
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| 19 | <para>The actual password for <emphasis>root</emphasis> (the "x" here is just a
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| 20 | placeholder) will be set later.</para>
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| 21 |
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| 22 | <para>Create the <filename>/etc/group</filename> file by running the following
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| 23 | command:</para>
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| 24 |
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| 25 | <para><screen><userinput>cat > /etc/group << "EOF"</userinput>
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| 26 | root:x:0:
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| 27 | bin:x:1:
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| 28 | sys:x:2:
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| 29 | kmem:x:3:
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| 30 | tty:x:4:
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| 31 | tape:x:5:
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| 32 | daemon:x:6:
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| 33 | floppy:x:7:
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| 34 | disk:x:8:
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| 35 | lp:x:9:
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| 36 | dialout:x:10:
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| 37 | audio:x:11:
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| 38 | nobody:x:1000:
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| 39 | <userinput>EOF</userinput></screen></para>
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| 40 |
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| 41 | <para>The created groups aren't part of any standard -- they are the groups
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| 42 | that the MAKEDEV script in the next section uses. Besides the group "root", the
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| 43 | LSB (<ulink url="http://www.linuxbase.org"/>) recommends only a group "bin",
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| 44 | with a GID of 1, be present. All other group names and GIDs can be chosen
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| 45 | freely by the user, as well-written packages don't depend on GID numbers but
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| 46 | use the group's name.</para>
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| 47 |
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| 48 | <para>Lastly, we re-login to the chroot environment. User name and group name
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| 49 | resolution will start working immediately after the
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| 50 | <filename>/etc/passwd</filename> and <filename>/etc/group</filename> files are
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| 51 | created, because we installed a full glibc in Chapter 5. This will get rid of
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| 52 | the <quote>I have no name!</quote> prompt.</para>
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| 53 |
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| 54 | <para><screen><userinput>exec /tools/bin/bash --login +h</userinput></screen></para>
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| 55 |
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| 56 |
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| 57 | </sect1>
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| 58 |
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