04-28-2010
How to check if process is running?
Hi
I would like to check if an instance of a script is already running.
I've seen many different examples, but I haven't the slightest idea as to how to do this.
Can you please help.
Thank you.
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LEARN ABOUT DEBIAN
wakeonlan
WAKEONLAN(1) User Contributed Perl Documentation WAKEONLAN(1)
NAME
wakeonlan - Perl script to wake up computers
SYNOPSIS
wakeonlan [-h] [-v] [-i IP_address] [-p port] [-f file] [[hardware_address] ...]
DESCRIPTION
This script sends 'magic packets' to wake-on-lan enabled ethernet adapters and motherboards, in order to switch on the called PC. Be sure
to connect the NIC with the motherboard if neccesary, and enable the WOL function in the BIOS.
The 'magic packet' consists of 6 times 0xFF followed by 16 times the hardware address of the NIC. This sequence can be encapsulated in any
kind of packet. This script uses UDP packets.
OPTIONS
-h Displays the help information.
-v Displays the script version.
-i ip_address
Destination IP address. Unless you have static ARP tables you should use some kind of broadcast address (the broadcast address of the
network where the computer resides or the limited broadcast address). Default: 255.255.255.255 (the limited broadcast address).
-p port
Destination port. Default: 9 (the discard port).
-f file
File with hardware addresses of wakeable computers. For an example check the file lab001.wol in the examples subdirectory.
EXAMPLES
Using the limited broadcast address (255.255.255.255):
$ wakeonlan 01:02:03:04:05:06
$ wakeonlan 01:02:03:04:05:06 01:02:03:04:05:07
Using a subnet broadcast address:
$ wakeonlan -i 192.168.1.255 01:02:03:04:05:06
Using another destination port:
$ wakeonlan -i 192.168.1.255 -p 1234 01:02:03:04:05:06
Using a file as source of hardware and IP addresses:
$ wakeonlan -f examples/lab001.wol
$ wakeonlan -f examples/lab001.wol 01:02:03:04:05:06
AUTHOR
Jose Pedro Oliveira <jpo@di.uminho.pt> maintaining and expanding original work done by Ico Doornekamp <ico@edd.dhs.org>.
COPYRIGHT
Copyright (c) 2000-2005 Jose Pedro Oliveira.
This is free software. You may modify it and distribute it under Perl's Artistic Licence. Modified versions must be clearly indicated.
SEE ALSO
For more information regarding this script and Wakeonlan technology just check the following address
http://gsd.di.uminho.pt/jpo/software/wakeonlan/.
perl v5.14.2 2012-03-10 WAKEONLAN(1)