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Full Discussion: extract line
Top Forums UNIX for Advanced & Expert Users extract line Post 302325624 by vgersh99 on Monday 15th of June 2009 07:37:03 PM
Old 06-15-2009
Quote:
Originally Posted by sylvainkalache
Thanks but this one do not work for me...


By the way I am a newbie with awk because I just discover this tool, but I don't understand why if I change a little my configuration file, the result is not ok.


Conf file:

Code:
interface FastEthernet0/0
 ip address 192.168.2.81 255.255.255.0
 duplex auto
 speed auto
 shutdown
!
interface FastEthernet1/0
 ip address 192.168.3.91 255.255.255.0
 shutdown
 duplex auto
 speed auto
!

It show:

Code:
is downernet0/0
is downernet1/0

It use awk and not nawk but I don't think it change something for this case...

If I good undestand this if awk find a line with the word interface it will stock the second word of the line in the variable inter and if it find the word shutdown before find another inter display the message with print:

Code:
nawk '/^interface/ {inter=$2;next}/shutdown/{print inter " is down"}' myConfig

why is this wrong?
both 'interfaces' have the 'shutdown' record......
How do you determine which is right or/wrong?
More description is needed.
 

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LEARN ABOUT DEBIAN

essidscan

ESSIDSCAN(8)							     Commands							      ESSIDSCAN(8)

NAME

       essidscan - scan for ESSID corresponding to available WLAN access points

SYNOPSIS

       In /etc/network/interfaces:

       mapping <interface> script essidscan

DESCRIPTION

       The essidscan utility is used to tell the ifup and ifdown utilities about the current SSID of the WLAN currently being accessed.  It can be
       used to map the SSID name to an iface stanza.

CONFIGURATION

       A sample /etc/network/interfaces may look like this:

	  mapping hotplug
	    script /etc/network/essidscan
	    map SSIDONE  wlan-work
	    map SSIDTWO  wlan-work
	    map HOME

	  iface wlan-work inet dhcp
	    wireless-key     1234-5678-9ABC-DEF0-1234-5678-9A
	    wireless-keymode restricted

	  iface HOME inet static
	    address	     192.168.2.4
	    netmask	     255.255.255.0
	    gateway	     192.168.2.1
	    wireless-essid   HOME
	    wireless-key     s:somepassword
	    wireless-keymode open

	  iface DEFAULT inet dhcp

FILES

       /etc/network/interfaces
	      the interfaces definition file

       /etc/network/run/ifstate
	      a record of the current state of the interfaces, managed by ifup and ifdown

SEE ALSO

       interfaces(5) ifscheme(8) ifup(8) ifdown(8)

AUTHORS

       Tor Slettnes <tor@slett.net>

																      ESSIDSCAN(8)
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