OK, I am using 'ipconfig /displaydns' to display all websites visited (since the last 'ipconfig /flushdns') and I would like to copy just the website's URL to Websites.txt.
A typical layout of the output is:
ocsp.digicert.com
----------------------------------------
Record Name . . . . . : ocsp.digicert.com
Record Type . . . . . : 5
Time To Live . . . . : 17913
Data Length . . . . . : 4
Section . . . . . . . : Answer
CNAME Record . . . . : cs9.wac.edgecastcdn.net
badge.stumbleupon.com
----------------------------------------
Record Name . . . . . : badge.stumbleupon.com
Record Type . . . . . : 1
Time To Live . . . . : 39560
Data Length . . . . . : 4
Section . . . . . . . : Answer
A (Host) Record . . . : 199.30.80.32
0.gravatar.com
----------------------------------------
Record Name . . . . . : 0.gravatar.com
Record Type . . . . . : 5
Time To Live . . . . : 2047
Data Length . . . . . : 4
Section . . . . . . . : Answer
CNAME Record . . . . : cs91.wac.edgecastcdn.net
But, I would wish just to have
ocsp.digicert.com
badge.stumbleupon.com
0.gravatar.com
as the output. Any ideas on how to do that, also I am using a Windows RT device, so external applications are not an option and the output is usually 10 times longer than that, and not all records are the same.
Use PowerShell:
ipconfig /displaydns | Select-String 'Record Name' | ForEach-Object {$_ -replace "Record Name . . . . . :", ""}
Related
I am writing a small program that calculates--recursively--all paths to (0,0) on the grid given some walls that need to be avoided. The grid looks something like this:
. . . . . . . . . . .
| . . | . . . . . . .
. . | . . . . . . . .
. . - - - . . - - - -
. | . . . . . | . . .
. . . . . | . | . . .
. . . . . . - - . . .
. - - - . . . | . . .
. | . . . . . | . . .
. | . . . . . . . . .
. . . | . . . . . . O
You must get to the origin without ever increasing distance to the origin in your path.
I have written this code to find all paths:
int recursive_find_path(unsigned int x, unsigned int y, unsigned int distance, std::vector<std::vector<GRID_STATUS> > blocked_grid){
//if(x>blocked_grid.size()-1 or y>blocked_grid[x].size()-1 or x<0 or y<0 or x+y > distance or blocked_grid[y][x] == GRID_BLOCKED or blocked_grid[y][x] == GRID_TRAVELLED)
if(x>blocked_grid.size()-1 or y>blocked_grid[x].size()-1 or x<0 or y<0 or x+y<distance or blocked_grid[y][x] == GRID_BLOCKED){
return 0;
}
if(blocked_grid[y][x] == GRID_TRAVELLED){
return 0;
}
if(x==0 and y==0){
return 1;
}
blocked_grid[y][x] = GRID_TRAVELLED; // set position to 'travelled' on to avoid infinite recursion
return recursive_find_path(x-1,y, distance-1,blocked_grid)+recursive_find_path(x,y-1, distance-1, blocked_grid)+recursive_find_path(x+1,y, distance-1, blocked_grid);
}
NOTE: GRID_TRAVLLED and GRID_BLOCKED are values defined elsewhere in the program but essentially are just tokens to indicate that there is a wall or the point has been travelled on.
However, when running, the program outputs that there are zero paths!
Admittedly, I am not sure how many paths there are but I can at least count a few thus it can't be zero.
Does anyone know what is going wrong here?
Thanks in advance
edit
. . . . . . . . . . . . . . . . . . .
X . . X . . . . . . . . . . . . . . .
. . X . . . . . . . . . . . . . . . .
. . X X X . . X X X X . . . . . . . .
. X . . . . . X . . . . . . . . . . .
. . . . . X . X . . . . . . . . . . .
. . . . . . X X . . . . . . . . . . .
. X X X . . . X . . . . . . . . . . .
. X . . . . . X . . . . . . . . . . .
. X . . . . . . . . . . . . . . . . .
. . . X . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . X . . . . X . . . . . .
. . . . . . . X . . . . . X X X X X X
. . . . . . . X . . . . . . . . . . .
. . . . . . . X . . . . . . . . . . .
. . . . . . . X . . . . . . . . . X S
Using this grid, I get an infinite loop....
updated code:
if(x>blocked_grid.size()-1 or y>blocked_grid[x].size()-1 or x<0 or y<0 or blocked_grid[y][x] == GRID_BLOCKED){
return 0;
}
if(x==0 and y==0){
return 1;
}
return recursive_find_path(x-1,y,blocked_grid)+recursive_find_path(x,y-1, blocked_grid);
}
after letting it sit for a while it did return 540. I am almost certain there can't be 540 paths in this case
I noticed at:
return recursive_find_path(x-1,y, distance-1,blocked_grid)+recursive_find_path(x,y-1, distance-1, blocked_grid)+recursive_find_path(x+1,y, distance-1, blocked_grid);
The two points (x + 1, y) and (x - 1, y) cannot both be closer to the origin, yet you pass (distance - 1) to both of those recursive calls. This will cause distance to eventually equal -1 for many paths, which will then return 0, but until they return 0, those paths will be marked as travelled despite being spurious paths that should have been prevented from being travelled.
You should only check paths that move closer to the origin, those being (x -1, y) and (x, y - 1)
I've taken a project in which the dataset separates the patient information and the disease observation, but the two observations have the same ID. Example:
ID: 12345 Patient age: 23, patient weight: 55, patient height: 180
ID: 12345 Disease progression: A, disease type: abc, Disease risk: 50
This goes on for every patient.
Now I want to run some statistics on this and for that I, as far as I know, have to consolidate this information in ONE observation, so we have patient characteristics and their disease characteristics in one observation. What would be the best way to do this? Bear in mind the two observations have mutually exclusive variables, so they can simply be "grouped" somehow.
* Example generated by -dataex-. To install: ssc install dataex
clear
input str32 record_id byte(treatment gender pcos aneurysmal_finding sz_anu_a_basilaris sz_anu_a_basilaris_2 sz_anu_a_basilaris_4)
"8a36ac06e58a541430cd8b31df3aeef2" . 1 0 2 . . .
"8a36ac06e58a541430cd8b31df3aeef2" . . . . . . .
"2afc1f12901992a1f973cde814615349" . 1 0 2 . . .
"2afc1f12901992a1f973cde814615349" . . . . . . .
"1e00442745c25082a64197b96065f755" . 1 0 2 . . .
"1e00442745c25082a64197b96065f755" . . . . . . .
"c90aef04e29f38fc3e21b919d5106ce8" . 1 0 2 . . .
"c90aef04e29f38fc3e21b919d5106ce8" . . . . . . .
"7cac71f3d31c7e9ec26e6a885ad554ab" . 2 0 2 . . .
"7cac71f3d31c7e9ec26e6a885ad554ab" . . . . . . .
"53c1f08aff25ace9afc46aca3263e7ca" . 1 0 2 . . .
"53c1f08aff25ace9afc46aca3263e7ca" . . . . . . .
"cdbf4328e0724f30950e437bc6bbe262" . 2 0 2 . . .
"cdbf4328e0724f30950e437bc6bbe262" . . . . . . .
"50d722dca92aee72c39c846066850a22" 1 2 0 2 . . .
"50d722dca92aee72c39c846066850a22" . . . . . . .
"ffe78f8927a81a5521f098aa077a755f" . 1 0 1 . . .
"ffe78f8927a81a5521f098aa077a755f" . . . . . . .
"aa2309be5c9b76012462fce3f43a8249" . 1 0 1 . . .
"aa2309be5c9b76012462fce3f43a8249" . . . . . . .
"4917b3d300e195b895e573474be6ccb6" . 1 0 2 . . .
"4917b3d300e195b895e573474be6ccb6" . . . . . . .
"b88557884343831060297ff4b67aeb36" . 1 . 2 . . .
"b88557884343831060297ff4b67aeb36" . . . . . . .
"ebe8ab86719aa71b68d7f0df3e451ce5" . . . 2 . . .
"8dd5267472002c796ce621984f9024ed" . . . . . . 3
"0b3e110c9765e14a5c41fadcc3cfc300" . . . . . . .
"8f58545ef8d37f290d26881743137a72" 1 2 0 2 . . .
"8f58545ef8d37f290d26881743137a72" . . . . . . .
"dcb6a27d1d4f5f1228860a76fa29e5ba" . 1 0 2 . . .
"dcb6a27d1d4f5f1228860a76fa29e5ba" . . . . . . .
"baedce78f2e736fe4d54dbdbe0460694" . 2 0 2 . . .
"baedce78f2e736fe4d54dbdbe0460694" . . . . . . .
"bb1db3b0eca9652cff3c76060b06d60b" 1 2 0 2 . . .
"bb1db3b0eca9652cff3c76060b06d60b" . . . . . . .
"6741bd218feba9de630dfe409a4e50ee" 1 2 0 2 . . .
"6741bd218feba9de630dfe409a4e50ee" . . . . . . .
"1e1425d670466e1a2c6c752d9227df17" . 2 0 2 . . .
"1e1425d670466e1a2c6c752d9227df17" . . . . . . .
"4c6672a06addc8e01842d2741be1857d" . 1 0 2 . . .
"4c6672a06addc8e01842d2741be1857d" . . . . . . .
"f1be80fbb7e4e1f5582780e25bfc8a2c" . 2 0 2 . . .
"f1be80fbb7e4e1f5582780e25bfc8a2c" . . . . . . .
"9991ec586e5f510e161fcad93fb1d79f" . 1 0 2 . . .
"9991ec586e5f510e161fcad93fb1d79f" . . . . . . .
"5c1eb56eccf9cf67ae6065f82b6eb6ce" . 1 0 2 . . .
"5c1eb56eccf9cf67ae6065f82b6eb6ce" . . . . . . .
"f9d10d2eb1951fa2ebc8b0509bb25593" . 1 0 2 . . .
"f9d10d2eb1951fa2ebc8b0509bb25593" . . . . . . .
"fbdf663512805caffe7a99d14fc9561f" . 2 0 2 . . .
"fbdf663512805caffe7a99d14fc9561f" . . . . . . .
"3b55aebe1b4b22e0c77168acc4b775dd" . 1 0 2 . . .
"3b55aebe1b4b22e0c77168acc4b775dd" . . . . . . .
"5f28194ddef4f9d057db2e4fcb7b5cf0" . 1 0 2 . . .
"5f28194ddef4f9d057db2e4fcb7b5cf0" . . . . . . .
"0b8d8253a8415275dbc2619e039985bb" . 1 0 2 5 . .
"0b8d8253a8415275dbc2619e039985bb" . . . . . . .
"4fb152c8524750b65b6717282cceb805" . 1 0 2 . . .
"4fb152c8524750b65b6717282cceb805" . . . . . . .
"ff5136e64c2110c355debca6acb74a13" . 1 0 2 . . .
"ff5136e64c2110c355debca6acb74a13" . . . . . . .
"29534fe6f18b75090b9d18f853ed7ec1" . 1 0 2 5 5 .
"29534fe6f18b75090b9d18f853ed7ec1" . . . . . . .
"8c334d2225db0661b25cf5f2c65fbcb9" . 1 0 2 . . .
"8c334d2225db0661b25cf5f2c65fbcb9" . . . . . . .
"68cf4b9f2db11cb9cf44fd0e03c53f16" . 2 . 2 . . .
"68cf4b9f2db11cb9cf44fd0e03c53f16" . . . . . . .
"6a44e65e7b1f33a3603acf2532bb40f9" . 1 0 2 . . .
"6a44e65e7b1f33a3603acf2532bb40f9" . . . . . . .
"2ed013748bf88df47c39d83bd48d8040" . 1 0 2 . . .
"2ed013748bf88df47c39d83bd48d8040" . . . . . . .
"c2f32f5b61b97d658f7b042b49b8da96" . 1 0 2 . . .
"c2f32f5b61b97d658f7b042b49b8da96" . . . . . . .
"58e1e0b5c29dee7d3739ec582d62b84c" . . . . . . .
"58e1e0b5c29dee7d3739ec582d62b84c" . . . . . . .
"8635b098d70b200fe8eef5dbf7c1c156" . 2 0 2 . . .
"8635b098d70b200fe8eef5dbf7c1c156" . . . . . . .
"266f1f1517fb50bafca92fff39c259d5" . 1 0 2 . . .
"266f1f1517fb50bafca92fff39c259d5" . . . . . . .
"d3df754a7322c02ed89f1208977a19ae" 1 2 0 2 5 . .
"d3df754a7322c02ed89f1208977a19ae" . . . . . . .
"46598c5d2da10731582d6342944e9337" . 1 0 2 . . .
"46598c5d2da10731582d6342944e9337" . . . . . . .
"8c2c5aa9b02eb1092b34cf38c2b1c83d" . 1 0 2 2 . .
"8c2c5aa9b02eb1092b34cf38c2b1c83d" . . . . . . .
"797c9cf7caf53f514f0154f34895fa80" . 1 0 2 . . .
"797c9cf7caf53f514f0154f34895fa80" . . . . . . .
"9b28a68095c520edcb56bee8aa5737b6" . 1 0 2 . . .
"9b28a68095c520edcb56bee8aa5737b6" . . . . . . .
"09e03748da35e9d799dc5d8ddf1909b5" . 1 0 2 . . .
"09e03748da35e9d799dc5d8ddf1909b5" . . . . . . .
"75d5574d8804d24932e3d0d9cbfa4b11" . 1 0 2 . . .
"75d5574d8804d24932e3d0d9cbfa4b11" . . . . . . .
"b5bda504efd4bd3b3be68513ccbf99ef" . 1 0 2 . . .
"b5bda504efd4bd3b3be68513ccbf99ef" . . . . . . .
"dc289c2a5a31355521dde31c4abd4c83" . 1 0 2 . . .
"dc289c2a5a31355521dde31c4abd4c83" . . . . . . .
"76ce83dbd64f05556e903deb54959d22" . 1 0 2 . . .
"76ce83dbd64f05556e903deb54959d22" . . . . . . .
"830ee6dd656938201f4a712607739768" . 1 0 2 . . .
end
label values treatment treatment_
label def treatment_ 1 "I blodfortyndende behandling", modify
label values gender gender_
label def gender_ 1 "Kvinde", modify
label def gender_ 2 "Mand", modify
label values pcos pcos_
label def pcos_ 0 "Nej", modify
label values aneurysmal_finding aneurysmal_finding_
label def aneurysmal_finding_ 1 "Screening", modify
label def aneurysmal_finding_ 2 "Tilfældig fund", modify
label values sz_anu_a_basilaris sz_anu_a_basilaris_
label def sz_anu_a_basilaris_ 2 "7-12 mm", modify
label def sz_anu_a_basilaris_ 5 "Uoplyst", modify
label values sz_anu_a_basilaris_2 sz_anu_a_basilaris_2_
label def sz_anu_a_basilaris_2_ 5 "Uoplyst", modify
label values sz_anu_a_basilaris_4 sz_anu_a_basilaris_4_
label def sz_anu_a_basilaris_4_ 3 "13-25 mm", modify
Essentially my problem could be solved using (assuming this syntax was correct):
gen obs1 = .
replace every variableValue in obs1 == variableValue in 12345
And then just iterating it for 1000s of observations..
On the assumption that each identifier is represented by at most 2 observations, and that each other variable is numeric and represented by a non-missing value in at most 1 observation, you can just collapse. The default collapse by means should work fine.
ds record_id, not
collapse `r(varlist)' , by(record_id)
A more cautious approach would be to check the assumptions first!
Assuming you have loaded both datasets.
First dataset is called dataset1.
Second dataset is called dataset2.
And your ID attribute is called id
Then you can call merge them on id.
use dataset1, clear
merge id using dataset2
I use windows command prompt cmd in admin mode for various task like finding ip address interface names etc. When I issue some command like
ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . :
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : domain.name
Ethernet adapter Ethernet 2:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : domain.name
Description . . . . . . . . . . . : Realtek PCIe GbE Family Controller #2
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Ethernet adapter VMware Network Adapter VMnet1:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet1
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
IPv4 Address. . . . . . . . . . . : 192.168.56.1(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 10 December 2019 22:10:04
Lease Expires . . . . . . . . . . : 11 December 2019 03:10:04
Default Gateway . . . . . . . . . :
DHCP Server . . . . . . . . . . . : 192.168.56.254
DHCPv6 IAID . . . . . . . . . . . : 33574998
DHCPv6 Client DUID. . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter VMware Network Adapter VMnet8:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : VMware Virtual Ethernet Adapter for VMnet8
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
IPv4 Address. . . . . . . . . . . : 192.168.136.1(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 10 December 2019 22:10:04
Lease Expires . . . . . . . . . . : 11 December 2019 03:10:04
Default Gateway . . . . . . . . . :
DHCP Server . . . . . . . . . . . : 192.168.136.254
DHCPv6 IAID . . . . . . . . . . . : 268456022
DHCPv6 Client DUID. . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
Primary WINS Server . . . . . . . : 192.168.136.2
NetBIOS over Tcpip. . . . . . . . : Enabled
Wireless LAN adapter Wi-Fi 2:
Connection-specific DNS Suffix . : domain.name
Description . . . . . . . . . . . : D-Link DWA-131 Wireless N Nano USB Adapter(rev.E)
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . :
IPv4 Address. . . . . . . . . . . : 192.168.1.14(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 10 December 2019 22:10:09
Lease Expires . . . . . . . . . . : 11 December 2019 22:10:12
Default Gateway . . . . . . . . . :
192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 353154770
DHCPv6 Client DUID. . . . . . . . :
DNS Servers . . . . . . . . . . . : 109.169.85.7
8.8.8.8
NetBIOS over Tcpip. . . . . . . . : Enabled
Wireless LAN adapter Wi-Fi:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : domain.name
Description . . . . . . . . . . . : Realtek RTL8723DE 802.11b/g/n PCIe Adapter
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
I get a lot of output on my screen.If I want only those lines which have physical addeess in
text output or say line that have DNS Servers only in ouput. Then is there an easy way to do
a grep on these in outout in Windows 10 cmd.
Or suppose in above output I want to see only output for section Vmnet8
then how can I grep it?
I want only those lines which have physical addeess
ipconfig|findstr /r ":: [0-9]\."
filters for lines that contain :: (for IPv6 addresses) or <number><dot> (for IPv4 addresses)
(as you mentioned being a "Linux-Guy" - don't expect too much from findstr REGEX. It's just a small crippled subset of real REGEX - see findstr /?)
Download the free MOBAXTERM then navigate through your windows OS same as if you are using Linux. Then you will be able to use grep etc.
With the introduction of Windows Subsystem for Linux (WSL), you can use grep directly on ipconfig.
** I have limited knowledge on grep. Here is a basic example usage:
On the classic Windows Command Prompt, run:
C:\> ipconfig /all | wsl grep 'IPv4'
On a Linux Terminal (e.g. Ubuntu on WSL), run (notice the .exe extension):
$ ipconfig.exe /all | grep 'IPv4'
Sample output
IPv4 Address. . . . . . . . . . . : 192.198.100.1(Preferred)
IPv4 Address. . . . . . . . . . . : 192.198.15.9(Preferred)
IPv4 Address. . . . . . . . . . . : 192.198.89.1(Preferred)
...
I'm making a reversi game in c++ and whenever I use a 10 by 10 array and search within the array to switch letters the game likes to switch up my rows and columns. This output would cause the o to switch to an x.
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . . .
. . . . . . . . x o
x . . . . . . . . .
Stack Overflow RegEx Wizards, I've scoured Google and haven't quite found a good solution for this. I need to pull out 1:N DNS servers from IPCONFIG results. In the example below, I would need the first three. However, there may be an instance where there are more or less.
Update: Optimally we want to place cursor at first colon(:) in the DNS string then capture IPs until we hit an alpha character. So if we can just scrape a string from that colon to that alpha character we can run another RegEx to match IPs.
DNS.*: gets us to the first colon (:)
Need to read-ahead until alpha character.
Important Note: Because of the third-party tool we're using we can only use RegEx :)
Here's the RegEx value I've been using as for IPs. This will capture all IP's instead of just the DNS ones...
(([0-9]){1,3}.){1,3}[0-9]{1,3}
IPCONFIG Example
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 152.225.244.1
DHCP Server . . . . . . . . . . . : 10.204.40.57
DNS Servers . . . . . . . . . . . : 10.204.127.11
10.207.2.50
10.200.10.6
Primary WINS Server . . . . . . . : 10.207.40.145
Secondary WINS Server . . . . . . : 10.232.40.38
Lease Obtained. . . . . . . . . . : Tuesday, August 28, 2012 6:45:12 AM
Lease Expires . . . . . . . . . . : Sunday, September 02, 2012 6:45:12 A
#!/usr/bin/env perl
use strict;
use warnings;
my $data = <<END;
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 152.225.244.1
DHCP Server . . . . . . . . . . . : 10.204.40.57
DNS Servers . . . . . . . . . . . : 10.204.127.11
10.207.2.50
10.200.10.6
Primary WINS Server . . . . . . . : 10.207.40.145
Secondary WINS Server . . . . . . : 10.232.40.38
Lease Obtained. . . . . . . . . . : Tuesday, August 28, 2012 6:45:12 AM
Lease Expires . . . . . . . . . . : Sunday, September 02, 2012 6:45:12 A
END
my #ips = ();
if ($data =~ /^DNS Servers[\s\.:]+((\d{2}\.\d{3}\.\d{1,3}\.\d{1,3}\s*)+)/m) {
#ips = split(/\s+/, $1);
print "$_\n" foreach(#ips);
}
I would use unpack instead of regular expressions for parsing column-based data:
#!/usr/bin/env perl
use strict;
use warnings;
while (<DATA>) {
my ($ip) = unpack 'x36 A*';
print "$ip\n";
}
__DATA__
DNS Servers . . . . . . . . . . . : 10.204.127.11
10.207.2.50
10.200.10.6
Primary WINS Server . . . . . . . : 10.207.40.145
Secondary WINS Server . . . . . . : 10.232.40.38
You may have to adjust the number 36 to the actual number of characters that should be skipped.
Personally, I'd go in a different direction. Instead of manually parsing the output of ipconfig, I'd use the Win32::IPConfig module.
Win32::IPConfig - IP Configuration Settings for Windows NT/2000/XP/2003
use Win32::IPConfig;
use Data::Dumper;
my $host = shift || "127.0.0.1";
my $ipconfig = Win32::IPConfig->new($host);
my #searchlist = $ipconfig->get_searchlist;
print Dumper \#searchlist;
Match
DNS.+?:(\s*([\d.]+).)+
and pull out the groups. This assumes you have the entire multi-line string in one blob, ans that the extracted text may contain newlines and other whitespace.
The last dot is to match the newline, you need to use /m option
Match against this regex (see in action):
DNS Servers.*:\s*(.*(?:[\n\r]+\s+.*(?:[\n\r]+\s+.*)?)?)
First capture group will be your three IP's (atmost three) as you requested. You need to trim whitespaces surely.
Edit: Regex fixed to match at most three IP's. If there is less IP's, matches them only.