Set date and time - MonthDayhoursMinutesYear.Seconds

date 041217002007.00

Search files created or changed within 10 days

find /usr/bin -type f -mtime -10

Start a download at any given time

echo 'wget -c www.example.com/files.iso' | at 09:00

I run this command when I go for lunch or something - these commands take a while to run.

sudo /bin/bash /usr/sbin/makewhatis -w; sudo /usr/bin/updatedb; sudo /home/binnyva/Software/System/chkrootkit-0.47/chkrootkit

Create the MySQL format date(YYYY-MM-DD) using the date command

date +%Y-%m-%d

This function will find the difference between two given times. Does PHP already have a native function for that?

//The difference between 2 given time
function dateDifference($day_1,$day_2) {
	$diff = strtotime($day_1) - strtotime($day_2);

	$sec   = $diff % 60;
	$diff  = intval($diff / 60);
	$min   = $diff % 60;
	$diff  = intval($diff / 60);
	$hours = $diff % 24;
	$days  = intval($diff / 24);

	return array($sec,$min,$hours,$days);
}

If you just want the day difference…

$diff = strtotime($day_1) - strtotime($day_2) + 1; //Find the number of seconds
$day_difference = ceil($diff / (60*60*24)) ;  //Find how many days that is

This can be done using the DATEDIFF function in MySQL 5

[tags]php,code,date,difference,time[/tags]