Run a Command at a Specific Time

How to run a script at a certain time on Linux?

Look at the following:

echo "ls -l" | at 07:00

This code line executes "ls -l" at a specific time. This is an example of executing something (a command in my example) at a specific time. "at" is the command you were really looking for. You can read the specifications here:

http://manpages.ubuntu.com/manpages/precise/en/man1/at.1posix.html
http://manpages.ubuntu.com/manpages/xenial/man1/at.1posix.html

Hope it helps!

Run a command at a specific time

You could try this:

at 1843 <<_EOF_
php /run/this/script.php
_EOF_

edit if what you want to do is run Firefox, try this:

at 1843 <<_EOF_
DISPLAY=:0.0 /usr/bin/firefox
_EOF_

Execute a shell script everyday at specific time

You want to edit your crontab file using

crontab -e

Then you want to add

55 23 * * * COMMAND TO BE EXECUTED

for more info look at this

How I can execute a command at a specific date and time in laravel 5.8?

In accordance to documentation you can use cron to check the:

• month
• day
• hour
• minute

Of execution upon a console command. Though it may cause to run every month date hour and minute you specify on cron but you can call a closure as seen in this piece of documentation. Therefore you can use a closure you the year check at Kernel.php.

use Carbon\Carbon;
use Illuminate\Support\Facades\Artisan

class Kernel extends ConsoleKernel
{
  
  // Some code exists here
  
  protected function schedule(Schedule $schedule): void
  {

      // Rest of schedules

       $schedule->call(function () {
               $year = Carbon::now()->y;
               if($year == 2021){
                  Artisan::call('nuke:country "Kim Young Un" Amerika');
                }
        })->cron('13 00 12 06 *');

      // More schedules

  }

  // Rest of code here
}

Therefore use a closure to check for the year and then if year is the appropriate one then call the code whilst on cron expression you check for month, day, hour and minute of execution.

An alternative approach is to let the closure handle it all:

$schedule->call(function () {

  $dates=[
    '2021-06-12 13:00' => [
       'commander'=>'Kim Young Un',
       'country'  => 'America'
     ],
     '2021-06-15 18:00' => [
       'commander'=>'Osama Bin Laden\'s clone',
       'country'  => 'America'
     ],
     '2021-06-15 06:00' => [
       'commander'=>'Adolf Hitler\'s clone',
       'country'  => 'Israel'
     ],
  ];  

  $date = Carbon::now()->format('Y-m-d H:i:s');
  
  if(isset($dates[$date])){
     $params=$dates[$date];
     Artisan::call("nuke:country \"{$params['commander']}\" {$params['country']}");
  }
})->cron('*****');

In other words, execute the command on appropriate dates and continuously check execution date is appropriate.

---

Related Topics