7.5. Création des répertoires

It is time to create the full directory structure in the LFS file system.

Créez quelques répertoires dans la racine qui ne font pas partie de l'ensemble limité requis dans les chapitres précédents, à l'aide de la commande suivante :

mkdir -pv /{boot,home,mnt,opt,srv}

Créez l'ensemble de sous-répertoires requis sous la racine en exécutant les commandes suivantes :

mkdir -pv /etc/{opt,sysconfig}
mkdir -pv /lib/firmware
mkdir -pv /media/{floppy,cdrom}
mkdir -pv /usr/{,local/}{include,src}
mkdir -pv /usr/local/{bin,lib,sbin}
mkdir -pv /usr/{,local/}share/{color,dict,doc,info,locale,man}
mkdir -pv /usr/{,local/}share/{misc,terminfo,zoneinfo}
mkdir -pv /usr/{,local/}share/man/man{1..8}
mkdir -pv /var/{cache,local,log,mail,opt,spool}
mkdir -pv /var/lib/{color,misc,locate}

ln -sfv /run /var/run
ln -sfv /run/lock /var/lock

install -dv -m 0750 /root
install -dv -m 1777 /tmp /var/tmp

Directories are, by default, created with permission mode 755, but this is not desirable everywhere. 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—just like a normal user would do with his or her own 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.