Let's create the directory tree on the LFS partition based on the FHS standard, which can be found at http://www.pathname.com/fhs/. Issuing the following commands will create a default directory layout:
mkdir -p bin boot dev/pts etc home lib mnt proc root sbin tmp var
for dirname in $LFS/usr $LFS/usr/local
���mkdir bin etc include lib sbin share src tmp var
���ln -s share/man man
���ln -s share/doc doc
���ln -s share/info info
���mkdir dict doc info locale man nls misc terminfo zoneinfo
���mkdir man1 man2 man3 man4 man5 man6 man7 man8
mkdir lock log mail run spool tmp
Normally, directories are created with permission mode 755, which isn't desired for all directories. The first change is a mode 0750 for the $LFS/root directory. This is to make sure that not just everybody can enter the /root directory (the same a user would do with /home/username directories). The second change is a mode 1777 for the tmp directories. This way, any user can write data to the /tmp directory but cannot remove another user's files (the latter is caused by the so-called "sticky bit" - bit 1 of the 1777 bit mask).
cd $LFS &&
chmod 0750 root &&
chmod 1777 tmp usr/tmp usr/local/tmp var/tmp
Now that the directories are created, copy the source files that were downloaded in chapter 3 to some subdirectory under $LFS/usr/src (you will need to create the desired directory yourself).