Re: Updating /etc/hosts automatically / behavior of sed command

2013-07-18 Thread Goswin von Brederlow 
On Fri, Jul 05, 2013 at 10:14:54AM +0200, Thomas Hood wrote:
 Tad Frank wrote:
  Your issue lies in the line: sed -e s/$REGISTERED_IP/$CURRENT_IP/g 
  /etc/hosts  /etc/hosts.new
 
 I searched debian-devel for the message to which you are responding;
 the most recent message with that subject header dates from December 1999.
 
 Yes, people were dynamically updating /etc/hosts in 1999 but I hope that
 no one has to do that any longer.  :)
 -- 
 Thomas Hood
 

And policy allows for /etc to be read-only so the code would be a
policy violation.

MfG
Goswin


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Re: Updating /etc/hosts automatically / behavior of sed command

2013-07-05 Thread Tad Frank 
Your issue lies in the line: sed -e s/$REGISTERED_IP/$CURRENT_IP/g
/etc/hosts  /etc/hosts.new
 
Take a look at the modification I made below, it should help.
 

if [ $CURRENT_IP != $REGISTERED_IP ] ; then

   echo -n IP address has changed: creating a new /etc/hosts file

   sed -i.old s/$REGISTERED_IP/$CURRENT_IP/g /etc/hosts

   echo .

else

   echo IP address hasn't changed: no update needed.

fi

 
Hope this helps.
 
~Tad

Re: Updating /etc/hosts automatically / behavior of sed command

2013-07-05 Thread Thomas Hood 
Tad Frank wrote:
 Your issue lies in the line: sed -e s/$REGISTERED_IP/$CURRENT_IP/g 
 /etc/hosts  /etc/hosts.new

I searched debian-devel for the message to which you are responding;
the most recent message with that subject header dates from December 1999.

Yes, people were dynamically updating /etc/hosts in 1999 but I hope that
no one has to do that any longer.  :)
-- 
Thomas Hood