Crontab ne fonctionne pas

Bonjour,

Je voudrais programmer des taches tout les jours à 3h.
J'ai bien fais : crontab -e.
Voila mon fichier actuel :
# Edit this file to introduce tasks to be run by cron.
#
# Each task to run has to be defined through a single line
# indicating with different fields when the task will be run
# and what command to run for the task
#
# To define the time you can provide concrete values for
# minute (m), hour (h), day of month (dom), month (mon),
# and day of week (dow) or use '*' in these fields (for 'any').#
# Notice that tasks will be started based on the cron's system
# daemon's notion of time and timezones.
#
# Output of the crontab jobs (including errors) is sent through
# email to the user the crontab file belongs to (unless redirected).
#
# For example, you can run a backup of all your user accounts
# at 5 a.m every week with:
# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
#
# For more information see the manual pages of crontab(5) and cron(8)
#
# m h dom mon dow command

0 3 * * * mysqldump -u root --password=pass --all-databases > /home/sauvegardes/dump_'date '+%Y%m%d''.sql
# sauvegarde bases de donnees mysql
0 3 * * * cp -af /var/www /home/sauvegardes
# sauvegarde sites internet
0 3 * * * cp -af /ect /home/sauvegardes
# sauvegardes des configurations





Mais le problème : rien ne s'exécute... Par contre les commandes dans un terminal simple fonctionne parfaitement.


Merci d'avance pour votre aide.