1 | <?xml version="1.0" encoding="ISO-8859-1"?> |
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" |
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3 | "http://www.oasis-open.org/docbook/xml/4.4/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-preps-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 LFS file system. Create a |
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14 | standard directory tree by issuing the following commands:</para> |
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15 | |
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16 | <screen><userinput>mkdir -pv ${CLFS}/{bin,boot,dev,etc/opt,home,lib,mnt,opt} |
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17 | mkdir -pv ${CLFS}/{proc,media/{floppy,cdrom},sbin,srv,sys,var} |
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18 | install -dv -m 0750 ${CLFS}/root |
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19 | install -dv -m 1777 ${CLFS}{/var,}/tmp |
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20 | mkdir -pv ${CLFS}/usr/{,local/}{bin,include,lib,sbin,src} |
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21 | mkdir -pv ${CLFS}/usr/{,local/}share/{doc,info,locale,man} |
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22 | mkdir -v ${CLFS}/usr/{,local/}share/{misc,terminfo,zoneinfo} |
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23 | mkdir -pv ${CLFS}/usr/{,local/}share/man/man{1..8} |
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24 | for dir in ${CLFS}/usr{,/local}; do |
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25 | ln -sv share/{man,doc,info} $dir |
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26 | done |
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27 | mkdir -v ${CLFS}/var/{lock,log,mail,run,spool} |
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28 | mkdir -pv ${CLFS}/var/{opt,cache,lib/{misc,locate},local}</userinput></screen> |
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29 | |
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30 | <para>Directories are, by default, created with permission mode 755, but |
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31 | this is not desirable for all directories. In the commands above, two |
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32 | changes are made—one to the home directory of user <systemitem |
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33 | class="username">root</systemitem>, and another to the directories for |
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34 | temporary files.</para> |
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35 | |
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36 | <para>The first mode change ensures that not just anybody can enter |
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37 | the <filename class="directory">/root</filename> directory—the |
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38 | same as a normal user would do with his or her home directory. The |
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39 | second mode change makes sure that any user can write to the |
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40 | <filename class="directory">/tmp</filename> and <filename |
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41 | class="directory">/var/tmp</filename> directories, but cannot remove |
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42 | another user's files from them. The latter is prohibited by the so-called |
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43 | <quote>sticky bit,</quote> the highest bit (1) in the 1777 bit mask.</para> |
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44 | |
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45 | <sect2> |
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46 | <title>FHS Compliance Note</title> |
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47 | |
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48 | <para>The directory tree is based on the Filesystem Hierarchy Standard (FHS) |
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49 | (available at <ulink url="http://www.pathname.com/fhs/"/>). In addition to |
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50 | the FHS, we create compatibility symlinks for the <filename |
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51 | class="directory">man</filename>, <filename |
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52 | class="directory">doc</filename>, and <filename |
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53 | class="directory">info</filename> directories since many packages still try |
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54 | to install their documentation into <filename |
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55 | class="directory">/usr/<directory></filename> or <filename |
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56 | class="directory">/usr/local/<directory></filename> as opposed to |
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57 | <filename class="directory">/usr/share/<directory></filename> or |
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58 | <filename class="directory">/usr/local/share/<directory></filename>. |
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59 | The FHS also stipulates the existence of <filename |
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60 | class="directory">/usr/local/games</filename> and <filename |
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61 | class="directory">/usr/share/games</filename>. The FHS is not precise as to |
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62 | the structure of the <filename class="directory">/usr/local/share</filename> |
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63 | subdirectory, so we create only the directories that are needed. However, |
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64 | feel free to create these directories if you prefer to conform more strictly |
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65 | to the FHS.</para> |
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66 | |
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67 | </sect2> |
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68 | |
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69 | </sect1> |
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