1. Stay away from the backticks! Instead of date2=`date +%Y%m%d` use date2="$(date +%Y%m%d)"
2. Use shell means wherever possible, it is way faster:
the same in shell code:
3. Unnecessary variables: you don't need "$date1" simply write:
4. Why do you run the script every two minutes? Wouldn't it be easier to run it permanently (as a daemon)?
This will process all the files there are, wait 60 seconds if there are none and then check again, etc..
i'm a relative newbie to unix (i'm on OSX) and i have a specific problem i'm tripped up on:
i'm piping the output of top (in log format) into an awk command which formats the information (and eventually will send it out continuously via udp/osc to another app). my problem is with what comes up... (4 Replies)
I'm wrting a program which needs to get the following information of a sever by calling some lib fuctions or system calls, so can anybody help to tell me those function names or where I can find the description of them ?
CPU usage
Memory usage
Load procs per min
Swap usage
Page I/O
Net I/O... (1 Reply)
I'm wrting a program which needs to get the following information of a sever by calling some lib fuctions or system calls, so can anybody help to tell me those function names or where I can find the description of them ?
CPU usage
Memory usage
Load procs per min
Swap usage
Page I/O
... (11 Replies)
Helllo folks...
I tryed to edit crontab and I have this problem when I do crontab -l it shows my crontab correctly and if I do crontab -e I get this.
baafh-99.03#
baafh-99.03# crontab -e
1063
?
?
?
?
?
and that is all ...:( I have to type "q" and hit enter and I am back... (4 Replies)
is there anyway to make while run a command faster than per second?
timed=60
while
do
command
sleep 1
done
i need something that can run a script for me more than one time in one second. can someone help me out here? (3 Replies)
I'm making a program that you input the month and year, and it creates a calender for that month of that year. This is my largest project yet, and I broke it up into several source files.
cal.c
#include "cal.h"
#include <stdio.h>
main() {
int month, year;
scanf("%d %d", &month,... (3 Replies)
This is an unusual situation where I have an NFS server currently serving out MULTIPLE clients over several variants of Linux and UNIX successfully (world permissions) except for a SINGLE client. Even the other Linux (SuSE) clients in the same room are mounting successfully with defaults without... (6 Replies)
what is wrong with the below script:
---------------------------------------------------------------------------------
#!/bin/bash
echo "Setting JrePath..."
grep -w "export JrePath" /etc/profile
Export_Status=$?
if
echo "JrePath declared"
elif
echo "JrePath not declared"
echo... (4 Replies)
Our comp-operator has come across a peculiar ‘feature'. We have this directory where we save all the reports that were generated for a particular department for only one calendar year. Currently there are 45,869 files. When the operator tried to backup that drive it started to print a flie-listing... (3 Replies)
Discussion started by: vslewis
3 Replies
LEARN ABOUT PHP
datetimeimmutable.diff
DATETIMEIMMUTABLE.DIFF(3) 1 DATETIMEIMMUTABLE.DIFF(3)DateTime::diff - Returns the difference between two DateTime objects
Object oriented style
SYNOPSIS
public DateInterval DateTime::diff (DateTimeInterface $datetime2, [bool $absolute = false])
DESCRIPTION
DateInterval DateTimeImmutable::diff (DateTimeInterface $datetime2, [bool $absolute = false]) DateInterval DateTimeInterface::diff (Date-
TimeInterface $datetime2, [bool $absolute = false])
Procedural style
DateInterval date_diff (DateTimeInterface $datetime1, DateTimeInterface $datetime2, [bool $absolute = false])
Returns the difference between two DateTimeInterface objects.
PARAMETERS
o $datetime
- The date to compare to.
o $absolute
- Should the interval be forced to be positive?
RETURN VALUES
The DateInterval object representing the difference between the two dates or FALSE on failure.
EXAMPLES
Example #1
DateTimeImmutable.diff(3) example
Object oriented style
<?php
$datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');
?>
Procedural style
<?php
$datetime1 = date_create('2009-10-11');
$datetime2 = date_create('2009-10-13');
$interval = date_diff($datetime1, $datetime2);
echo $interval->format('%R%a days');
?>
The above examples will output:
+2 days
Example #2
DateTime object comparison
Note
As of PHP 5.2.2, DateTime objects can be compared using comparison operators.
<?php
$date1 = new DateTime("now");
$date2 = new DateTime("tomorrow");
var_dump($date1 == $date2);
var_dump($date1 < $date2);
var_dump($date1 > $date2);
?>
The above example will output:
bool(false)
bool(true)
bool(false)
SEE ALSO DateInterval.format(3), DateTime.add(3), DateTime.sub(3).
PHP Documentation Group DATETIMEIMMUTABLE.DIFF(3)