How to set a cron job to run every 3 hours

Question

Is this the correct way for setting a cron job to run every 3 hours   After setting it this way  cron is executing the command every minute

User · Answer

Change Minute parameter to 0   You can set the cron for every three hours as   0   3         your command here

User · Answer

The unix setup should be like the following    0   3       sh cron update old citations sh   good reference for how to set various settings in cron at  http   www thegeekstuff com 2011 07 cron-every-5-minutes

User · Answer

Change Minute to be 0   That s it      Note   you can check your  crons  in http   cronchecker net   Example

[cron] How to set a cron job to run every 3 hours

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