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Shell Programming and Scripting

Script that will look the same as Cron

 
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Old 08-09-2019
Hi,

Using the approach from my script, you would just tweak the runtime variable accordingly. For instance, in the provided example:

Code:
runtime=`/usr/bin/date -d '2019-08-09 14:22:00' +%s`

the target time is very specifically 14:22:00 on the 9th of August 2019. If you wanted, for instance, to make your code run on 25th December 2020 at midnight, you'd just change this to:

Code:
runtime=`/usr/bin/date -d '2020-12-25 00:00:00' +%s`

and you'd be all set.

--- Post updated at 03:51 PM ---

Hi,

Alternatively, if you wanted a more generic and less specific solution - e.g. a "run this at 14:50 every Friday" kind of situation, without worrying about an actual specific date in the year or specific second - you could do something along these lines:

Code:
#!/bin/bash

runday="Fri"
runhour="14"
runminute="50"

while true
do
        nowday=`/usr/bin/date +%a`
        nowhour=`/usr/bin/date +%H`
        nowminute=`/usr/bin/date +%M`

        if [ "$runday" == "$nowday" ] && [ "$runhour" == "$nowhour" ] && [ "$runminute" == "$nowminute" ]
        then
                date
                echo "It's time to run"
                exit 0
        else
                date
                echo "It's not time to run, I'll keep waiting"
        fi

        /usr/bin/sleep 60
done

This User Gave Thanks to drysdalk For This Post:
meister29
 
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