How to run cron once daily at 10pm

Question

I had entered     22       test  gt   dev null   However  I am being notified via email that this is running every minute  I am confused I guess because I thought this was correct for what I am wanting

User · Answer

Here is what I look at everytime I am writing a new crontab entry:

To start editing from terminal -type:

 zee$ crontab -e

what you will add to crontab file:

0 22 * * 0  some-user /opt/somescript/to/run.sh

What it means:

[ 
+ user => 'some-user',      
+ minute => ‘0’,             <<= on top of the hour.
+ hour => '22',              <<= at 10 PM. Military time.
+ monthday => '*',           <<= Every day of the month*
+ month => '*',              <<= Every month*
+ weekday => ‘0’,            <<= Everyday (0 thru 6) = sunday thru saturday
]

Also, check what shell your machine is running and name the the file accordingly OR it wont execute.

Check the shell with either echo $SHELL or echo $0

It can be "Bourne shell (sh) , Bourne again shell (bash),Korn shell (ksh)..etc"

User · Answer

It s running every minute of the hour 22 I guess  Try the following to run it every first minute of the hour 22   0 22

User · Answer

To run once  daily at 10PM you should do something like this   0 22            Full size image  http   i stack imgur com BeXHD jpg  Source  softpanorama org

User · Answer

Here are some more examples   Run every 6 hours at 46 mins past the hour   46       6                   Run at 2 10 am   10     2                   Run at 3 15 am   15     3                   Run at 4 20 am   20     4                   Run at 5 31 am   31     5                   Run at 5 31 pm   31     17

User · Answer

The syntax for crontab              Minute 0-59  Hour 0-24  Day of month 1-31  Month 1-12  Day of week 0-6  Command to execute   Your syntax    22       test  gt   dev null   your job will Execute every minute at 22 00 hrs all week  month and year    adding an option  0-59  at the minute place will run it once at 22 00 hrs all week  month and year    0 22       command to execute    Source https   www adminschoice com crontab-quick-reference

[bash] How to run cron once, daily at 10pm

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