monitoring file transfer with tcpdump

Hi,
I'm new to linux. I'd like to write a script for linux that make the
following things:
-make tcpdump start on the the NIC i want
-make a file transfer from a remote pc start with samba (e.g. the
samba directory is /remote/smb)
-once the file transfer is finished, close the program tcpdump

I don't how to close the tcpdump program after the file transfer is
finished in the script.
I'd be very grateful if anybody can help me?
thank u

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In comp.os.linux.networking Eugenio Milas <ilion1982@yahoo.it> suggested:
> Hi,
> I'm new to linux. I'd like to write a script for linux that make the
> following things:
> -make tcpdump start on the the NIC i want
> -make a file transfer from a remote pc start with samba (e.g. the
> samba directory is /remote/smb)
> -once the file transfer is finished, close the program tcpdump

Would you mind telling us what you are going to do? Right now it
doesn't make any sense to me.

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Michael Heiming (GPG-Key ID: 0xEDD27B94)
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Eugenio Milas wrote:
> Hi,
> I'm new to linux. I'd like to write a script for linux that make the
> following things:
> -make tcpdump start on the the NIC i want
> -make a file transfer from a remote pc start with samba (e.g. the
> samba directory is /remote/smb)
> -once the file transfer is finished, close the program tcpdump
>
> I don't how to close the tcpdump program after the file transfer is
> finished in the script.
> I'd be very grateful if anybody can help me?
> thank u

the basic concept of the script would be:

i) start tcpdump on the nic you want and put it to the background or
start it in a xterm or whatever ... (xterm -e tcpdump &)
ii) start the copy-process
iii) kill tcpdump

peter




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