Partie I / Question 1)
find . -name "*.install" -type d 
Question 2)
find . -name "*.d" -type f
Question 3)
find . -empty -type d
Question 4)
find . -size -1000c -type f
Question 5)
find . -size +30000c -type f
Question 6)
find . -size -1k -type f
Question 7)
find . -size 2b -type f
Question 8)
find . -size +30b -type f
Question 9)
find . -size -3b -type f
Question 10)
find . -size +1b -type f -size -4b
Question 11)
find . -newer lib/krb5/synch/atom.install
Question 12)
find ./lib/krb5/synch/ -mtime -4
Question 13)
find /lib/kernel/install.d -mtime +3
Question 14)
find -mtime 3 -atime 2
Question 15)
find -type d -perm /022
Question 16)
find -type d -perm -444
Question 17)
find -type d -perm 644

Partie II / Question 1)