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Parameters passed to commands but not working in Bash shell

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# 8  
Old 12-07-2009
no problem with my code I have tested it with successful o/p.

it seems that the hosts or some of them in file host.txt can't be resolved;

Code:
xargs: arp: exited with status 255; aborting
: Unknown host

did you try to put the IP address instead of the name of the hosts?

---------- Post updated at 18:46 ---------- Previous update was at 18:44 ----------
Quote:
Originally Posted by ahmad.diab
no problem with my code I have tested it with successful o/p.

it seems that the hosts or some of them in file host.txt can't be resolved;

Code:
xargs: arp: exited with status 255; aborting
: Unknown host

did you try to put the IP address instead of the name of the hosts?
kindly see my o/p when I try the code:-

Code:
bash-3.00$ for ((i=1;i<10;i++)) ; do echo $(head -n $i /etc/hosts  | tail -1| nawk '{print $2}') | xargs -n 1 arp; done

o/p:-
Code:
arp: Internet: unknown host # host is not exist in my LAN
localhost (127.0.0.1) -- no entry
server2 (192.168.7.216) at 0:21:28:2:b0:54 permanent published
omc_splat2 (192.168.7.65) at 0:14:4f:1e:e7:7f
server9 (192.168.7.62) -- no entry
server7 (192.168.7.54) -- no entry
server4 (192.168.7.58) -- no entry

# 9  
Old 12-07-2009
Finally i get something, but i still do not understand why sometime works, and why sometimes not..

i still can't get some mac address.. anyway i get some others..

I think that the file it self /root/hosts.txt was the problem.. because i wrote another host1.txt and works.

THANKS ahmad.diab!!! Smilie Smilie
Thank you very much!!
Smilie
Kindly Regards,
# 10  
Old 12-07-2009
Quote:
Originally Posted by Cypress
Finally i get something, but i still do not understand why sometime works, and why sometimes not..

i still can't get some mac address.. anyway i get some others..

I think that the file it self /root/hosts.txt was the problem.. because i wrote another host1.txt and works.

THANKS ahmad.diab!!! Smilie Smilie
Thank you very much!!
Smilie
Kindly Regards,
Code:
strange to me too ..it is not from the code if you do the arp  (e.g arp server4) 
command done on the xterm sometimes you get output some times not!!!! 
it seems this is an issue related to the network itself

SmilieSmilieSmilie
# 11  
Old 12-07-2009
Try:
Code:
dos2unix host.txt

It may be you have carriage return characters in your file because it came from a dos/windows platform.
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