Run a command once in three hours


 
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Top Forums Shell Programming and Scripting Run a command once in three hours
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Old 12-10-2018
Same principal approach as bakunin's, but mayhap a bit less resource consuming (no cat nor echo (i.e. opening time stamp file twice), just file system (meta data) operation, running date just once), given stat and date -d are available on your system:


Code:
if (( $(stat -c%Y $last) < $(date -d"3 hours ago" +%s) ))
 then  UNIX Command---once in 3 hours
       touch $last
fi

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