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Old 06-09-2003, 06:03 PM   #1
J_Szucs
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Registered: Nov 2001
Location: Budapest, Hungary
Distribution: SuSE 6.4-11.3, Dsl linux, FreeBSD 4.3-6.2, Mandrake 8.2, Redhat, UHU, Debian Etch
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How to find out dynamic IP address in a script?


I am writing a script, which should somehow find out what dynamic IP address is assigned to the local machine.
Is there an easy and generic way (say... checking an environment variable?) to find it?

P.S.
I know ifconfig shows the IP address, but I found it hard to find a common way to grep it out, since the list has a different structure on the two unixes I have access to.
I also know that it may be found (and easily grepped out) in /var/log/messages, but I do not know if it is always there.
So, is there an other solution?
 
Old 06-09-2003, 07:13 PM   #2
manthram
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you can parse the dhcpclient-ethX.leases file. if the client gets an ip it will be written in that file.

the file is in /var/lib/dhcp/
 
  


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