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Need help to copy the lease info block

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Top Forums Shell Programming and Scripting Need help to copy the lease info block
# 1  
Old 03-05-2010
Data Need help to copy the lease info block
Hi,

am having a lease file which contains lots os lease info. In that i have to copy the whole block(shown below) by identifying the mac and change the IP according to the i/p.

I have used like
Code:
 
sed s/${ip_addr[i]}/$ch_ip/g $temp_file | grep -B5 "${mac[$i]}" >> $persistent_file
sed s/${ip_addr[i]}/$ch_ip/g $temp_file | grep -A4 "${mac[$i]}" | grep -v "${mac[$i]}" >> $persistent_file

above lines are in for loop

here i grep using before and after option, but now the lines in lease info may vary....
Code:
lease 172.19.134.239 {
  starts 3 2010/02/10 04:59:07;
  ends 3 2010/02/10 13:59:07;
  ----------------------
 ---------------------- (No of lines which may vary in between   
 ---------------------    automatically thro dhcpd)
 -----------------------
  binding state active;
  next binding state free;
  hardware ethernet 00:1d:45:56:b0:e2;
  uid "\000cisco-001d.4556.b0e2-Fa0.14";
  option agent.circuit-id "eth0";
  client-hostname "WAP";
}

I need a solution to copy the lease info.

Any help is appreciated!!!
Thanks in advance
Last edited by Scott; 03-05-2010 at 02:10 AM.. Reason: Code tags
# 2  
Old 03-05-2010
Better you clearly define what your input file contains and what output you're expecting.
# 3  
Old 03-05-2010
Code:
Input: ./xxx.sh 4 00:23:5e:04:4a:20/1/230 00:1d:45:56:b0:e2/2/239 00:19:06:eb:0a:98/3/238 00:ff:ff:ff:ff:ff/4/237

i need to copy the contents of lease info which contains the MAC am passing as input(carried out thro for loop).and have to change the IP according to the i/p given.

For ExampleSmilieconsider above input)

Iteration 1:
check for 00:23:5e:04:4a:20 which is stored in mac[0]
and consider original lease file contains IP as .237 for this MAC,

Now i have to find this mac[0] in the lease info and and update the IP as .240 according to the value passing after MAC(ie.,1 in first case)


i have sort out how to find the particular IP in case of variable number of lines between IP and MAC..


Solution Needed:

update the IP using MAC id and copy the contents of that changed lease info to some file.

i used grep option "before" and "after" to copy the lines, sed to change the IP.....case is now that lines are variable....


Code:
sed s/${ip_addr[i]}/$ch_ip/g $temp_file | grep -B5 "${mac[$i]}" >> $persistent_file
sed s/${ip_addr[i]}/$ch_ip/g $temp_file | grep -A4 "${mac[$i]}" | grep -v "${mac[$i]}" >> $persistent_file

Last edited by Scott; 03-05-2010 at 02:14 AM.. Reason: Code tags please...
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