[SOLVED]Schedule Tasks on Linux Using Crontab

##########################################################
#*     *     *   *    *        command to be executed
#-     -     -   -    -
#|     |     |   |    |
#|     |     |   |    +----- day of week (0 - 6) (Sunday=0)
#|     |     |   +------- month (1 - 12)
#|     |     +--------- day of        month (1 - 31)
#|     +----------- hour (0 - 23)
#+------------- min (0 - 59)
##########################################################
#Update Time Server, every 1h:
* */1 * * * /opt/script/time-force-update.sh

#NGINX: GET CACHE INFO PER 5 mins:
*/5 * * * * /opt/script/nginx-cache-info-daily.sh

#CHECK IOSTAT when get CACHE:
*/5 * * * * /opt/script/iostat-to-file.sh

#NGINX: TRUNCATE LOG, 10min ON SSD LOCATION:
*/5 * * * * /opt/script/nginx-log-truncate.sh

#SCAN ALIVED HOST: EVERY NIGHT
31 23 * * * /opt/script/nmap-scan-alive-host.sh

#DELETE OLD LOG FILE, KEEP ONLY ONE:
45 23 * * * /opt/script/nmap-delete-old-log-file.sh

#DELETE OLD NGINX CACHE FOLDER: 50GB
#SAMPLE: DONE
#06 16 23 09 3 /opt/script/nginx-delete-cache.sh

#Running only one time, at: 2015.09.24 01h03p
03 01 24 09 4 /opt/script/nginx-delete-cache.sh

#Delete old file, 7 day in the past at 6h05:
05 6 * * * /opt/script/delete-old-files.sh