[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[b06ca36] | 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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[673b0d8] | 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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[8ef8304] | 7 |
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[673b0d8] | 8 | <sect1 id="ch-system-creatingdirs">
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[8ef8304] | 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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[673b0d8] | 15 |
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[1a96a4ed] | 16 | <screen><userinput>mkdir -pv /{bin,boot,etc/{opt,sysconfig},home,lib/firmware,mnt,opt}
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[83b720b] | 17 | mkdir -pv /{media/{floppy,cdrom},sbin,srv,var}
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| 18 | install -dv -m 0750 /root
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| 19 | install -dv -m 1777 /tmp /var/tmp
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| 20 | mkdir -pv /usr/{,local/}{bin,include,lib,sbin,src}
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[d02c56d] | 21 | mkdir -pv /usr/{,local/}share/{color,dict,doc,info,locale,man}
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[83b720b] | 22 | mkdir -v /usr/{,local/}share/{misc,terminfo,zoneinfo}
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[177aee0] | 23 | mkdir -v /usr/libexec
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[83b720b] | 24 | mkdir -pv /usr/{,local/}share/man/man{1..8}
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[3dc9543] | 25 |
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[4e82d47] | 26 | case $(uname -m) in
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[aa7e88f] | 27 | x86_64) ln -sv lib /lib64
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| 28 | ln -sv lib /usr/lib64
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[3dc9543] | 29 | ln -sv lib /usr/local/lib64 ;;
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[4e82d47] | 30 | esac
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[3dc9543] | 31 |
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[9f318ba] | 32 | mkdir -v /var/{log,mail,spool}
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| 33 | ln -sv /run /var/run
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| 34 | ln -sv /run/lock /var/lock
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[d02c56d] | 35 | mkdir -pv /var/{opt,cache,lib/{color,misc,locate},local}</userinput></screen>
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[673b0d8] | 36 |
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[8ef8304] | 37 | <para>Directories are, by default, created with permission mode 755, but
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| 38 | this is not desirable for all directories. In the commands above, two
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| 39 | changes are made—one to the home directory of user <systemitem
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| 40 | class="username">root</systemitem>, and another to the directories for
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| 41 | temporary files.</para>
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[81fd230] | 42 |
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[8ef8304] | 43 | <para>The first mode change ensures that not just anybody can enter
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| 44 | the <filename class="directory">/root</filename> directory—the
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| 45 | same as a normal user would do with his or her home directory. The
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| 46 | second mode change makes sure that any user can write to the
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| 47 | <filename class="directory">/tmp</filename> and <filename
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| 48 | class="directory">/var/tmp</filename> directories, but cannot remove
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| 49 | another user's files from them. The latter is prohibited by the so-called
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| 50 | <quote>sticky bit,</quote> the highest bit (1) in the 1777 bit mask.</para>
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[81fd230] | 51 |
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[8ef8304] | 52 | <sect2>
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| 53 | <title>FHS Compliance Note</title>
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[81fd230] | 54 |
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[6bf3f58] | 55 | <para>The directory tree is based on the Filesystem Hierarchy Standard
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| 56 | (FHS) (available at <ulink
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| 57 | url="https://wiki.linuxfoundation.org/en/FHS"/>). The FHS also stipulates
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| 58 | the optional existence some directories such as <filename
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[83b720b] | 59 | class="directory">/usr/local/games</filename> and <filename
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[6bf3f58] | 60 | class="directory">/usr/share/games</filename>. We create only the
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| 61 | directories that are needed. However, feel free to create these
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| 62 | directories. </para>
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[81fd230] | 63 |
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[8ef8304] | 64 | </sect2>
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[81fd230] | 65 |
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[673b0d8] | 66 | </sect1>
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