On Fri, Jan 6, 2012 at 8:26 AM, Kevin Fries <kevin@fries-biro.com> wrote:

Just out of curiosity...

Is there a specific use case you are using to explain why you are reinventing the wheel?

Much of our discussion with scripting and systems use is like "Hello World".

http://backuppc.sourceforge.net/faq/BackupPC.html

It would help to know exactly what you are trying to achieve that BackupPC can't handle so we can find you a better solution.

Great solution: but he is trying to identify all connected samba shares from Windows7 machines only on a DHCP network.

Kevin

On Jan 6, 2012 8:00 AM, "Lisa Kachold" <lisakachold@obnosis.com> wrote:

Hi James;

On Fri, Jan 6, 2012 at 1:11 AM, James Dugger <james.dugger@gmail.com> wrote:
Does anyone know if a Linux server can identify windows users connected to the server through a Samba share, where Samba has not been configured as a domain controller (i.e. samba is resolving user accounts with smbpasswd only). Are the windows users always synced with a UNIX user?

I am writing a bash script for a rather peculiar backup scenario where laptops running Windows 7 are backed up to a server when/if they are connected to the LAN using rsync. There is no local DNS server or domain controller installed in the LAN (other than the router which is only configured for DHCP service). I had planned to use the following to generate a list of connected users:

who | cut -d' ' -f1 | sort | uniq > /srv/backup/user.lst

This list would then be read into a bash array and used to iterate the backup script for those known connected users. However, If I can't verify Windows users that are connected is there a clean non-taxing way to test for the mac addresses of the connected laptops over the LAN? I know that using:

nmap -sP <ip address range>

will return the mac address along with other info, but I don't know if there is a way to get a clean mac address only list from scan.

Any thoughts would be greatly appreciated.

Thanks

--
James

You can use netstat to compare with the list of mac addresses for Windows.

You can also use OCS Inventory to maintain your Windows7 mac list more easily (so you don't have to get the mac's and hand maintain the list). It runs a client on both linux and windows systems that gives all manner of great info.

Example Flow Chart:

# netstat -antp | grep smbd

Then use:
awk $5 > $list

compare $list with your flat file list of windows7 users

and rsync away.

Full get mac address line might look like this:

netstat -an | grep :80 | awk ‘{print $4}’
or this:
netstat -an | grep :80 | awk ‘{print $4}’ | awk -F: ‘{print $1}’ | sort | uniq

stuff into a variable:

modify this backup script snarfed from http://stackoverflow.com/questions/4674167/helpful-suggestions-for-bash-backup-script-for-samba-shares-using-rsync
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