%general-entities; ]> It is time to create some structure in the target CLFS file system. Create a standard directory tree by issuing the following commands: mkdir -pv ${CLFS}/targetfs/{bin,boot,dev,{etc/,}opt,home,lib/{firmware,modules},mnt} mkdir -pv ${CLFS}/targetfs/{proc,media/{floppy,cdrom},sbin,srv,sys} mkdir -pv ${CLFS}/targetfs/var/{lock,log,mail,run,spool} mkdir -pv ${CLFS}/targetfs/var/{opt,cache,lib/{misc,locate},local} install -dv -m 0750 ${CLFS}/targetfs/root install -dv -m 1777 ${CLFS}/targetfs{/var,}/tmp mkdir -pv ${CLFS}/targetfs/usr/{,local/}{bin,include,lib,sbin,src} mkdir -pv ${CLFS}/targetfs/usr/{,local/}share/{doc,info,locale,man} mkdir -pv ${CLFS}/targetfs/usr/{,local/}share/{misc,terminfo,zoneinfo} mkdir -pv ${CLFS}/targetfs/usr/{,local/}share/man/man{1,2,3,4,5,6,7,8} for dir in ${CLFS}/targetfs/usr{,/local}; do ln -sv share/{man,doc,info} ${dir} done Directories are, by default, created with permission mode 755, but this is not desirable for all directories. In the commands above, two changes are made—one to the home directory of user root, and another to the directories for temporary files. The first mode change ensures that not just anybody can enter the /root directory—the same as a normal user would do with his or her home directory. The second mode change makes sure that any user can write to the /tmp and /var/tmp directories, but cannot remove another user's files from them. The latter is prohibited by the so-called sticky bit, the highest bit (1) in the 1777 bit mask. The directory tree is based on the Filesystem Hierarchy Standard (FHS) (available at ). In addition to the FHS, we create compatibility symlinks for the man, doc, and info directories since many packages still try to install their documentation into /usr/<directory> or /usr/local/<directory> as opposed to /usr/share/<directory> or /usr/local/share/<directory>. The FHS also stipulates the existence of /usr/local/games and /usr/share/games. The FHS is not precise as to the structure of the /usr/local/share subdirectory, so we create only the directories that are needed. However, feel free to create these directories if you prefer to conform more strictly to the FHS.