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Full Discussion: How to check if the script is already running?
Top Forums UNIX for Beginners Questions & Answers How to check if the script is already running? Post 302990679 by thomasraj87 on Monday 30th of January 2017 03:57:30 PM
Old 01-30-2017
Thanks Scrutinizer..

But sometimes few persons are giving CTRL + Z to run it in background and they are forgetting to let it run in bg. At that time if another person run the same script again means i am not getting the desired output from the script as both the script execution will write in same output file.

So by considering this and bcoz of some other reason, i decided to place the file on server local filesystem and can be run from that server only. i know grep is not suitable one here as if i use 'ps|grep report.sh' command it ll fetch other occurrences as well (i.e less report.sh, vi report.sh, etc). In this case can i use any other ways to check if the script is already running.
Last edited by thomasraj87; 01-30-2017 at 05:06 PM..
 

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LEARN ABOUT DEBIAN

dhcp6relay

DHCP6RELAY(8)						    BSD System Manager's Manual 					     DHCP6RELAY(8)

NAME

     dhcp6relay -- DHCPv6 relay agent

SYNOPSIS

     dhcp6relay [-Ddf] [-b boundaddr] [-H hoplim] [-r relay-IF] [-s serveraddr] [-S script-file] [-p pid-file] interface ...

DESCRIPTION

     dhcp6relay acts as an intermediary to deliver DHCPv6 messages between clients and servers, and is on the same link as a client.  dhcp6relay
     needs command line arguments interface ..., which specifies the list of links accommodating clients.

     Options supported by dhcp6relay are:

     -d      Print debugging messages.

     -D      Even more debugging information is printed.

     -f      Foreground mode (useful when debugging).  Although dhcp6relay usually prints warning, debugging, or error messages to syslog(8), it
	     prints the messages to standard error if this option is specified.

     -b boundaddr
	     Specifies the source address to relay packets to servers (or other agents).

     -H hoplim
	     Specifies the hop limit of DHCPv6 Solicit messages forwarded to servers.

     -r relay-IF
	     Specifies the interface on which messages to servers are sent.  When omitted, the same interface as interface will be used.  When
	     multiple interface are specified, this option cannot be omitted.

     -s serveraddr
	     Specifies the DHCPv6 server address to relay packets to.  If not specified, packets are relayed to ff05::1:3 (All DHCPv6 servers).

     -S script-file
	     Specifies the script file to be executed when dhcp6relay receives a RELAY-REPLY message from a DHCPv6 server.  Further detail of the
	     script file syntax is available in dhcp6c(8)

     -p pid-file
	     Use pid-file to dump the process ID of dhcp6relay.

FILES

     /var/run/dhcp6relay.pid  is the default file that contains pid of the currently running dhcp6relay.

SEE ALSO

     dhcp6c(8), dhcp6s(8)

     Ralph Droms, Editor, Dynamic Host Configuration Protocol for IPv6 (DHCPv6), RFC 3315, 2003.

HISTORY

     The dhcp6relay command first appeared in WIDE/KAME IPv6 protocol stack kit.

KAME
								   Apr 18, 2000 							      KAME
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