Bash script - for rsync to backup file server running samba.

[Kevin Fries]

Just out of curiosity...

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

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.

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

> Hi James;
>
> On Fri, Jan 6, 2012 at 1:11 AM, James Dugger <james.dugger at 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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