Need help to copy the lease info block Post: 302401083

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Top Forums Shell Programming and Scripting Need help to copy the lease info block Post 302401083 by SMNK on Friday 5th of March 2010 12:45:30 AM

03-05-2010

Registered User

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

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LEARN ABOUT FREEBSD

dhclient.leases

DHCLIENT.LEASES(5)					      BSD File Formats Manual						DHCLIENT.LEASES(5)

NAME

     dhclient.leases -- DHCP client lease database

DESCRIPTION

     The Internet Software Consortium DHCP client keeps a persistent database of leases that it has acquired that are still valid.  The database
     is a free-form ASCII file containing one valid declaration per lease.  If more than one declaration appears for a given lease, the last one
     in the file is used.  The file is written as a log, so this is not an unusual occurrence.

     The lease file is named dhclient.leases.IFNAME, where IFNAME represents the network interface the DHCP client acquired the lease on.  For
     example, if dhclient(8) is configured for the em0 network device, the lease file will be named dhclient.leases.em0.

     The format of the lease declarations is described in dhclient.conf(5).

FILES

     /var/db/dhclient.leases.IFNAME  Current lease file.

SEE ALSO

     dhclient.conf(5), dhcp-options(5), dhcpd.conf(5), dhclient(8), dhcpd(8)

     RFC 2132, RFC 2131.

AUTHORS

     The dhclient(8) utility was written by Ted Lemon <mellon@vix.com> under a contract with Vixie Labs.

     The current implementation was reworked by Henning Brauer <henning@openbsd.org>.

BSD
								  January 1, 1997							       BSD