1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [ |
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent"> |
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5 | %general-entities; |
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6 | ]> |
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7 | |
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8 | <sect1 id="ch-final-system-creatingdirs"> |
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9 | <?dbhtml filename="creatingdirs.html"?> |
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10 | |
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11 | <title>Creating Directories</title> |
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12 | |
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13 | <para>It is time to create some structure in the target CLFS file system. |
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14 | Create a standard directory tree by issuing the following commands:</para> |
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15 | |
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16 | <screen><userinput>mkdir -pv ${CLFS}/targetfs/{bin,boot,dev,etc,home,lib/{firmware,modules}} |
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17 | mkdir -pv ${CLFS}/targetfs/{mnt,opt,proc,sbin,srv,sys} |
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18 | mkdir -pv ${CLFS}/targetfs/var/{cache,lib,local,lock,log,opt,run,spool} |
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19 | install -dv -m 0750 ${CLFS}/targetfs/root |
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20 | install -dv -m 1777 ${CLFS}/targetfs/tmp |
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21 | mkdir -pv ${CLFS}/targetfs/usr/{,local/}{bin,include,lib,sbin,share,src}</userinput></screen> |
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22 | |
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23 | <para>Directories are, by default, created with permission mode 755, but |
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24 | this is not desirable for all directories. In the commands above, two |
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25 | changes are made—one to the home directory of user <systemitem |
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26 | class="username">root</systemitem>, and another to the directories for |
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27 | temporary files.</para> |
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28 | |
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29 | <para>The first mode change ensures that not just anybody can enter |
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30 | the <filename class="directory">/root</filename> directory—the |
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31 | same as a normal user would do with his or her home directory. The |
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32 | second mode change makes sure that any user can write to the |
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33 | <filename class="directory">/tmp</filename> and <filename |
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34 | class="directory">/var/tmp</filename> directories, but cannot remove |
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35 | another user's files from them. The latter is prohibited by the so-called |
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36 | <quote>sticky bit,</quote> the highest bit (1) in the 1777 bit mask.</para> |
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37 | |
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38 | <sect2> |
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39 | <title>FHS Compliance Note</title> |
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40 | |
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41 | <para>The directory tree is based on the Filesystem Hierarchy Standard (FHS) |
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42 | (available at <ulink url="http://www.pathname.com/fhs/"/>).</para> |
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43 | |
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44 | </sect2> |
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45 | |
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46 | </sect1> |
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