Boas tenho o contrab assim:
# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
# m h dom mon dow user command
#17 * * * * root cd / && run-parts --report /etc/cron.hourly
#25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
#47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
#52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#
0 1 * * * root reboot
#00 3 * * * root /emu/script/./configupdate.sh >> /emu/log/configupdate.log 2>&1
#15,45 * * * * root /emu/script/./illegal.sh >> /emu/log/illegal.log 2>&1
#*/5 * * * * root /emu/script/./check.sh >>/emu/log/check.log 2>&1
#00 3 * * * root /emu/script/./configupdate.sh >> /emu/log/configupdate.log 2>&1
#15,45 * * * * root /emu/script/./illegal.sh >> /emu/log/illegal.log 2>&1
#*/5 * * * * root /emu/script/./check.sh >>/emu/log/check.log 2>&1
#02 * * * * root wget -O -
http://127.0.0.1/cron_update.php?p=1 >/dev/null 2>&1
#30 * * * * root wget -O -
http://127.0.0.1/cron_ping.php?p=1 >/dev/null 2>&1
10 11 * * * /sbin/shutdown -r now
CTRL+X
YES
Será que cometi algu erro ?