Retirer date nom série

Time
{15:14}thomas@houseServer@~$echo Timeless 2016 | tail -c2
6
{15:15}thomas@houseServer@~$echo Timeless 2016 | tail -c5
2016
{15:15}thomas@houseServer@~$echo Timeless 2016 | tail -c0
{15:16}thomas@houseServer@~$echo Timeless 2016 | tail -c1

{15:16}thomas@houseServer@~$echo Timeless 2016 | tail -c2
6
{15:16}thomas@houseServer@~$echo Timeless 2016 | tail -c5
2016
{15:16}thomas@houseServer@~$echo Timeless 2016 | sed 's/.*\(..\)$/\4/'sed 's/.*\(..\)$/\4/'
sed: -e expression n°1, caractère 16: option inconnue pour `s'
{15:17}thomas@houseServer@~$echo Timeless 2016 | sed '/.*\(..\)$/\4/'sed '/.*\(..\)$/\4/'
sed: -e expression n°1, caractère 12: commande inconnue: `\'
{15:17}thomas@houseServer@~$echo Timeless 2016 | sed '/.*\(..\)$/\4/'
sed: -e expression n°1, caractère 12: commande inconnue: `\'
{15:17}thomas@houseServer@~$echo Timeless 2016 | sed 's/.*\(..\)$/\4/'
sed: -e expression n°1, caractère 15: référence \4 invalide dans le côté droit de la commande `s'
{15:17}thomas@houseServer@~$echo -e Timeless 2016 | sed 's/.*\(..\)$/\4/'
sed: -e expression n°1, caractère 15: référence \4 invalide dans le côté droit de la commande `s'
{15:17}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{2\}\)$/\1/"
16
{15:18}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/\1/"
2016
{15:18}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)"
sed: -e expression n°1, caractère 15: commande `s' inachevée
{15:18}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/"
sed: -e expression n°1, caractère 17: commande `s' inachevée
{15:18}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$"
sed: -e expression n°1, caractère 16: commande `s' inachevée
{15:18}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/.$//"
Timeless 201
{15:20}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/4$//"
Timeless 2016
{15:21}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/$$$$//"
Timeless 2016
{15:21}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/...$//"
Timeless 2
{15:21}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/....$//"
Timeless
{15:21}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[0-9][0-9][0-9][0-9]$//"
Timeless
{15:52}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[0-9][0-9][0-9]$//"
Timeless 2
{15:52}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[0-9][0-9][0-9][0-9]$//"
Timeless
{15:52}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[0-9][0-9][0-9][0-5]$//"
Timeless 2016
{15:52}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-9]$//"
Timeless
{15:52}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-9]$//"^C
{15:57}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-9]$//" | echo $?
130
{15:58}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-5]$//" | echo $?
0
{15:58}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-9]$//" | echo $?
0
{15:58}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-9]$//" | echo $?
0
{15:58}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-5]$//" | echo $?
0
{15:59}thomas@houseServer@~$echo -e Timeless 2016 | sed "s/[1-2][0-9][0-9][0-9]$//"
Timeless
{15:59}thomas@houseServer@~$echo -e Timeless 2016 | "s/[1-2][0-9][0-9][0-9]$//"
-bash: s/[1-2][0-9][0-9][0-9]$//: Aucun fichier ou dossier de ce type
{16:00}thomas@houseServer@~$echo -e Timeless 2016 | grep "s/[1-2][0-9][0-9][0-9]$//"
{16:00}thomas@houseServer@~$echo -e Timeless 2016 | grep "s/[1-2][0-9][0-9][0-9]$//"
{16:00}thomas@houseServer@~$echo -e Timeless 2016 | grep "s/[1-2][0-9][0-9][0-9]$//" ^C
{16:41}thomas@houseServer@~$$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/\1/"
-bash: -e : commande introuvable
{16:43}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/\1/"
2016
{16:43}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/\2/"
sed: -e expression n°1, caractère 20: référence \2 invalide dans le côté droit de la commande `s'
{16:43}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/\0/"
Timeless 2016
{16:43}thomas@houseServer@~$echo -e Timeless 2016 |sed "s/^.*\(.\{4\}\)$/\1/"