crontab example

# This is a comment
0 0 * * * /usr/bin/magiccronjob

3.63
8
Awgiedawgie 440215 points

                                    //Specify cron frequency
//e.g. run minute 0, every hour
0 */1 * * *
//enter a bash command to the script input field
//e.g. a wget command where the output isn't saved
wget -O- url_here >> /dev/null

3.63 (8 Votes)
0
4
7
A-312 69370 points

                                    crontab -e						# to edit (then 'i': insert, ':wq!': save and quit)
10 * * * * /bin/sh backup.sh    # every hour at 10"
0 */4 * * * /bin/sh backup.sh   # every 4 hours at 0"
0 9-17 * * * /bin/sh backup.sh  # every hour at 0" between 9 and 17
0 2 * * * /bin/sh backup.sh     # daily at 2am
0 0 * * MON /bin/sh backup.sh   # every Monday at 0am
0 0 * * 1-5 /bin/sh backup.sh   # daily from Monday to Friday at 0am
0 0 * * 0 /bin/sh backup.sh     # weekly on Sunday
0 0 1 * * /bin/sh backup.sh     # monthly (1rst day at 0am)
0 0 1 */3 * /bin/sh backup.sh   # every quarter (1rst day at 0am)
0 0 1 1 * /bin/sh backup.sh     # yearly (01/01)

4 (7 Votes)
0
3.8
10
Awgiedawgie 440215 points

                                    # Example of job definition:
# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7) OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  *  user command to be executed
example :
# 50 12 * * * ----- run every day at 12.50

# */5 * * * * ----- run every 5 minutes

3.8 (10 Votes)
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