Un archivo de texto que posee una lista con todos los scripts a ejecutar. Generalmente cada usuario del sistema posee su propio fichero Crontab. Se considera que el ubicado en la carpeta etc pertenece al usuario root.
exemplo:
# 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 1 */1 * * * /bin/bash /opt/laRioja/procesar.sh 5 0 * * * root /opt/reinicioTomcat/reiniciatomcat.sh
Comandos crontab:
crontab -l => ver configuración de crontab
crontab -e => modificar configuración de crontab
crontab archivo => cambiar archivo configuración de crontab
crontab -d => borrar crontab configurado
