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Full Discussion: Multi pattern selection
Top Forums Shell Programming and Scripting Multi pattern selection Post 303000447 by RavinderSingh13 on Wednesday 12th of July 2017 10:06:28 AM
Old 07-12-2017
Hello sam_bd,

Could you please go through the following explanation and let me know if this helps you.
Code:
awk -F"="  '                           ###Set field seprator as "=" here.
  /SName/{               ###Looking for string SName in any line, if that is present i any line then perform following.
   VAL=$0;        ###create variable VAL and assign its value to current line.
   next           ###next is awk built-in keyword which will SKIP all next statements now.
                       }
        /ESys/  {               ###Searching for string "ESys" here in any line, if that is present then perform following.
   print VAL,$0   ###Print the value of variable VAL and current line too.
         }
           '  Input_file               ###Mentioning the Input_file here, which is getting processes by awk.

Thanks,
R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
sam_bd
 

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LEARN ABOUT CENTOS

ip-ntable

IP-NTABLE(8)							       Linux							      IP-NTABLE(8)

NAME

       ip-ntable - neighbour table configuration

SYNOPSIS

       ip [ OPTIONS ] address  { COMMAND | help }

       ip ntable change name NAME [ dev DEV ] PARMS

       PARMS := { thresh1 VAL | thresh2 VAL | thresh3 VAL | gc_int MSEC | base_reachable MSEC | retrans MSEC | gc_stale MSEC  | delay_probe MSEC |
	       queue LEN  | app_probs VAL | ucast_probes VAL | mcast_probes VAL  | anycast_delay MSEC | proxy_delay MSEC | proxy_queue LEN  |
	       locktime MSEC }

       ip ntable show [ dev DEV ] [ name NAME ]

DESCRIPTION

       ip ntable controls the parameters for the neighbour tables.

   ip ntable show - list the ip neighbour tables
       This commands displays neighbour table parameters and statistics.

       dev DEV
	      only list the table attached to this device.

       name NAME
	      only lists the table with the given name.

   ip ntable change - modify table parameter
       This command allows modifying table parameters such as timers and queue lengths.

       name NAME
	      the name of the table to modify.

       dev DEV
	      the name of the device to modify the table values.

EXAMPLES

       ip ntable show dev eth0
	   Shows the neighbour table (IPv4 ARP and IPv6 ndisc) parameters on device eth0.

       ip ntable change name arp_cache queue 8 dev eth0
	   Changes the number of packets queued while address is being resolved from the default value (3) to 8 packets.

SEE ALSO

       ip(8)

AUTHOR

       Manpage by Stephen Hemminger

iproute2							    20 Dec 2011 						      IP-NTABLE(8)
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