Partie I
I.1/
find . -name "*.install" -type d
I.2/
find . -name "*.d" -type f
I.3/
find . -empty -type d
I.4/
find . -size -1000c  -type f 
I.5/
find . -size +30000c  -type f 
I.6/
find . -size 1024c  -type f  
I.7/
find . -size 2b  -type f 
I.8/
find . -size +30b  -type f   
I.9/
find . -size -3b  -type f 
I.10/
find . -size +1b -type f -a -size -4b  
I.11/
find . -type f -newer lib/krb5/synch/atom.install . 
I.12/
find /lib/krb5/sync/ -mtime -4  
I.13/
find  /lib/kernel/install.d -mtime +3   
I.14/
find  . -mtime 3 -atime 2
I.15/
find . -typ d -perm /0022
I.16/
find . -type d -perm -444
I.17/
find . -type f -perm 644

Partie II
II.1/ 
find . -maxdepth 4 -name "[[:digit:]]" -type f -exec cp '{}' lib/kernel/config/AA/BB/CC/ \;
find . -maxdepth 4 -name "[[:digit:]]" -type f -exec cp '{}' lib/kernel/config/AA/BB/CC/XX \;
find . -maxdepth 4 -name "[[:digit:]]" -type f -exec cp '{}' lib/kernel/config/AA/BB/DD/ \;
find . -maxdepth 4 -name "[[:digit:]]" -type f -exec cp '{}' lib/kernel/config/AA/BB/DD/YY \;
II.2/
find . -amin +29
II.3/
find . -mindepth 6 -name "[[:upper:]]*" -type d -exec chmod 700 '{}' \;
II.4/
find . -cmin +14