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solved -gawk, search for pattern - mark the previous line as a variable?

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Old 05-13-2010
solved -gawk, search for pattern - mark the previous line as a variable?
Im trying to parse ifconfig with awk and setup a bunch of variables in one shot. But Im having trouble figuring out how to work with data in previous lines.

ifconfig output:
Code:
eth0      Link encap:Ethernet  HWaddr 00:50:DA:10:7F:1B  
          inet addr:10.10.10.10  Bcast:10.10.10.127  Mask:255.255.255.192
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1307626 errors:0 dropped:0 overruns:199 frame:0
          TX packets:429249 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:104476566 (99.6 Mb)  TX bytes:46971778 (44.7 Mb)
          Interrupt:12 Base address:0xc000 

eth1      Link encap:Ethernet  HWaddr 00:0B:AD:01:11:3F  
          inet addr:192.168.1.200  Bcast:192.168.1.255  Mask:255.255.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:456 (456.0 b)  TX bytes:126 (126.0 b)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:80524 errors:0 dropped:0 overruns:0 frame:0
          TX packets:80524 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:23978596 (22.8 Mb)  TX bytes:23978596 (22.8 Mb)

awk command:
Code:
ifconfig | awk '/addr\:/ {if($0 ~ "192.168.1" || $0 ~ "127.0.0.1") {next};\
 x=$2; y=NR-1}\
 /addr\:/ {if($0 ~ "192.168.1"); a=$2; b=NF-1}\
\
 END \
\
{sub("addr:","",x); split(x,ip,"."); split(b,ethlan,FS); split(y,ethwan,FS);\
\
 printf "export ipaddress=%s\nexport ISPIP=%s\nexport BUSIP=%s.%s.%s.%s\nexport VIPA=%s.%s.%s.%s\nexport WAN_DEV=%s\nexport LAN_DEV=%s\n",x,x,ip[1],ip[2],ip[3],int(ip[4]+1),ip[1],ip[2],ip[3],int(ip[4]+5),ethwan[1],ethlan[1]}'

I know that's sloppy formatting.. sorry about that.

Current output is this:

Code:
export ipaddress=10.10.10.10
export ISPIP=10.10.10.10
export BUSIP=10.10.10.11
export VIPA=10.10.10.15
export WAN_DEV=3
export LAN_DEV=1

Id like for it to be this:
Code:
export ipaddress=10.10.10.10
export ISPIP=10.10.10.10
export BUSIP=10.10.10.11
export VIPA=10.10.10.15
export WAN_DEV=eth0
export LAN_DEV=eth1

My problem is getting variable y and b, to be the eth0 and eth1 line (rather then the line number). Smilie Im sure that awk line could be more efficient but im not the greatest with awk... I cant even format the spacing correctly Smilie

---------- Post updated 05-13-10 at 01:02 PM ---------- Previous update was 05-12-10 at 03:37 PM ----------

ok, I got this worked through... I had a c dev help me out and he cleaned up my logic, and added a hold=$0 to the end, then I just change the b and y=NF-1 to b=$0 and y=$0. which gives me a variable for the previous line.
Last edited by trey85stang; 05-12-2010 at 05:57 PM..
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