Creating directories 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:
cd $LFS mkdir -p bin boot dev/pts etc home lib mnt proc root sbin tmp var for dirname in $LFS/usr $LFS/usr/local    do    mkdir $dirname    cd $dirname    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    cd $dirname/share    mkdir dict doc info locale man nls misc terminfo zoneinfo    cd $dirname/share/man    mkdir man1 man2 man3 man4 man5 man6 man7 man8 done cd $LFS/var 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 socalled "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).