Cron configuration instruction to the receiver of Enigma 2

Hi
Enigma 2 Receivers facilities are superb and the same potential that I know many of these capabilities.
Cron is the name of one of these capabilities.

We have a program or command in a Cron job to run automatically provide a point of time.
Now that our program is a shell script that I rebooted the server, or even instead of a command to give, For example, "every seven days, a date that represents the time and date command is run.

All this is done by Cron.
Cron service always runs in the Background and permanently.

Cron is the sex of my files in your /etc/cron.d/ is located, to understand this in your server address enter the following command in SSH:

ls -la cron

Cron service always addresses /etc/cron.d and /var/spool/cron/ checks.

How to install and create Cronjobs:

crontab -e

Using Cronjobs:

1 2 3 4 5 /path/to/command arg1 arg2

or

1 2 3 4 5 /root/script.sh

Description:

1 minutes (0-59)
2: Time (0-23)
3 days (0-31)
4: Month (0-12 [12 == December])
5: Day of week (0-7)

Command: /path/to/command/ - Script or command must be run.

View all Crontab jobs:

crontab -l
crontab -u username -l

Clear CronTab Jobs:

crontab -r
crontab -r -u username

Contents of a file /etc/crontab/:

SHELL=/bin/bash
    PATH=/sbin:/bin:/usr/sbin:/usr/bin
    MAILTO=root
    HOME=/




    # run-parts
    01 * * * * root run-parts /etc/cron.hourly
    02 4 * * * root run-parts /etc/cron.daily
    22 4 * * 0 root run-parts /etc/cron.weekly
    42 4 1 * * root run-parts /etc/cron.monthly

Description directories:

/etc/crontab file.

All scripts that want to run here and leave their name in the /etc/cron.d/ are.

/etc/cron.daily/

All scripts that are executed only once a day:

/etc/cron.hourly/

All scripts that are executed each only once per hour:

/etc/cron.monthly/

All scripts that are executed at once:

/etc/cron.weekly/

How to use this directory to run our script?

We want the script with clean.cache delete the cache will run every 10 days. This script file in /etc/cron.daliy/ put.
So we have a file with this address: /etc/cron.daily/clean.cache/ that its contents are as follows:

#!/bin/bash
    # A sample shell script to clean cached file from lighttpd web server
    CROOT=”/tmp/cachelighttpd/”
    DAYS=10
    LUSER=”lighttpd”
    LGROUP=”lighttpd”




    # start cleaning
    /usr/bin/find ${CROOT} -type f -mtime +${DAYS} | xargs -r /bin/rm




    # if directory deleted by some other script just get it back
    if [ ! -d $CROOT ]
    then
    /bin/mkdir -p $CROOT
    /bin/chown ${LUSER}:${LGROUP} ${CROOT}
    fi

How to backup Cronjob Started:

crontab -l > /backup/cron/cronjobs.bakup
crontab -u username -l > /backup/cron/cronjobs_username.bakup

I hope to be useful.

by Eminem

Good luck