Opciones:
Editamos el documento crontab para añadir una nueva tarea (linea) utilizamos crontab -e
Listamos nuestras tareas con crontab -l
crontab -u para utilizar el crontab de otro usuario del sistema.
Especificamos el directorio de crontab con crontab -c directorio
Por último para borrar nuestro crontab usaríamos crontab-d
Este sería el contenido del fichero crontab:
# 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
AQUÍ IRÁN LAS NUEVAS TAREAS
***** shutdown –r apagado del sistema con sudo.
30
18 * * * /home/usuario/ejemplo.txt :ejecuta lo siguienta a las seis i
media de la tarde.
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