===== mkdir =====

Pour créer le répertoire toto avec tous les répertoires parents :
  mkdir -p /home/repertoire/toto

Pour créer une arborescence : 
  mkdir -pv dir{1,2,3}/subdir{1,2,3}
  
  mkdir: created directory `dir1/subdir1'
  mkdir: created directory `dir1/subdir2'
  mkdir: created directory `dir1/subdir3'
  mkdir: created directory `dir2/subdir1'
  mkdir: created directory `dir2/subdir2'
  mkdir: created directory `dir2/subdir3'
  mkdir: created directory `dir3/subdir1'
  mkdir: created directory `dir3/subdir2'
  mkdir: created directory `dir3/subdir3'

===== rmdir =====
Pour supprimer une arborescence (les répertoires doivent être vides): 
  rmdir -v dir{1,2,3}/subdir{1,2,3}
  
  rmdir: removing directory, dir1/subdir1
  rmdir: removing directory, dir1/subdir2
  rmdir: removing directory, dir1/subdir3
  rmdir: removing directory, dir2/subdir1
  rmdir: removing directory, dir2/subdir2
  rmdir: removing directory, dir2/subdir3
  rmdir: removing directory, dir3/subdir1
  rmdir: removing directory, dir3/subdir2
  rmdir: removing directory, dir3/subdir3