I have a tricky problem, and I'm quite the scripting newb.
I have Cisco ACLs that have IP addresses in them. I'd like to convert the IP's to hostnames for easier analysis. A sample ACL input file would be (I've obfuscated the IPs):
Code:
access-list acl-secure-out line 1 extended permit icmp any any
access-list acl-secure-out line 2 extended permit tcp host 200.00.000.000 object-group ser-secure-bed eq 2049
access-list acl-secure-out line 2 extended permit tcp host 200.00.000.000 host 10.0.000.1 eq 2049
Here is the trick - I only want to convert host IPs - so, any IP that follows the word 'host' in the ACL (which I have as a text file).
For some reason, the system command output prints out before the whole line, and munges up the line output (see '00ess-list' at the beginning of the 3rd line). I know that command wouldn't do exactly what I wanted, but I think I'm close.
The system command is working OK - it's looking up the hostname just fine, I just need to find a way to do that, and replace the IP in the line with the hostname, but only when the IP is preceded by the word 'host'.
I want to make a script to read a list of ip addresses from a file then convert those ip addresses to ip number.
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Dear Experts,
I have a text file on my itanium box which contains list of nearly 1000 hostnames. I do not have the IP Address of them. I want read each entry from the text file and want to do a nslookup to the DNS Server and get the IP Adresses and put them in another file in the format... (1 Reply)
Hi there
Im not quite sure how i can do this, but i am retrieving the mac address from boxes, which in some instances is arriving in its shortened format (i.e. dropping the leading zeros)... for example
0:3:BA:1:E:84
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edit; I found a solution that works, see thread #3 https://www.unix.com/302417065-post3.html
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Mutt 1.2.3.1i
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Hi,
Anyone can help?
Currently :
I'm am using a smtp smart relay, 1 hostname but different IP Address 192.168.2.108 and 192.168.2.109).
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Discussion started by: fspalero
2 Replies
LEARN ABOUT DEBIAN
addr2name
ADDR2NAME(1) User's Manual ADDR2NAME(1)NAME
addr2name, name2addr - perform DNS lookups from scripts
SYNOPSIS
addr2name [-46cmnr] [HOSTNAMES]
name2addr [-46cn] [HOSTNAMES]
DESCRIPTON
Write addresses or canonical hostname of specified names to the standard output. If no names are specified via the command line, they are
read from the standard input.
OPTIONS -4 or --ipv4
Only try to perform IPv4 lookups.
-6 or --ipv6
Only try to perform IPv6 lookups.
-c or --config
Only lookup and print results for address families that match locally configured addresses (If the system has no IPv4 resp IPv6
address, then IPv4 resp IPv6 addresses are ignored).
-h or --help
Display some help and exit.
-m or --multiple
Normally, if a name yields multiple results, only the first one is printed. With this optional parameter, all results will be
printed on a single line, separated by spaces.
-n or --numeric
Prevent forward hostname lookup. This ensures that the input names are numeric addresses, which do not need to be looked up. Typi-
cally used along with the --reverse option to convert numerical addresses to canonical hostnames.
-r or --reverse
Perform a reverse DNS lookup (enabled implicitly with addr2name). addr2name prints numerical resolved addresses by default instead.
--version
Display program version and license and exit.
SEE ALSO host(1), getaddrinfo(3), getnameinfo(3), resolv.conf(5)AUTHOR
Remi Denis-Courmont <remi at remlab dot net>
$Id: addr2name.1 658 2010-10-31 20:56:30Z remi $
http://www.remlab.net/ndisc6/
addr2name $Date: 2010-10-31 22:56:30 +0200 (dim. 31 oct. 2010) $ ADDR2NAME(1)
02-25-2010
Any thoughts?