New to scripting, got a working bash script, safe to deploy in Windows environ?

[john_spiral]

Hi,

I've got a working one liner script that gives me a directory listing on a remote Windows machine. I know it's not such :p.

I'm going to be running it against a few thousand machines from an Ubuntu box running 8.1. *Will it be safe*?

sample:

ping machine1 | grep 'Reply'; if [ $? == 0 ]; then find //machine1/c$/DOCUME~1 -maxdepth 1 -type d >> output.txt; fi;
ping machine2 | grep 'Reply'; if [ $? == 0 ]; then find //machine2/c$/DOCUME~1 -maxdepth 1 -type d >> output.txt; fi;

Once I've run this audit I intend copying *.lnk files from all the machines to the Ubuntu box. What tools should I look at for connecting to the Windows environment with specific credentials?

thanks in advance.

John

[lykwydchykyn]

Does this actually work for you? I didn't think "find" would actually connect directly to a smb share like that. It doesn't work here for me.

I would think you'd want to use smbmount to mount the C$ share to a temp folder and then run your "find" command against the temp folder.

Also, does the "ping machine1|grep "Reply"" actually work? I don't see the text "reply" in any responses from ping (either good or bad). Also, without the -c switch ping on Linux will run forever.

[Pvt_Ryan]

Reply shouldn't work.



if [ `ping $machine -c1 | grep -c -i "64 bytes from ${machine}"` -eq 0 ]; then
mount ...
find ...
umount ...
fi


Heres a script I have for pinging cluster nodes:
http://projects.ninet.org/index.php/Node_Availability

[john_spiral]

Does this actually work for you? I didn't think "find" would actually connect directly to a smb share like that. It doesn't work here for me.

I would think you'd want to use smbmount to mount the C$ share to a temp folder and then run your "find" command against the temp folder.

Also, does the "ping machine1|grep "Reply"" actually work? I don't see the text "reply" in any responses from ping (either good or bad). Also, without the -c switch ping on Linux will run forever.

Hi, forgot to mention that I developed the above script in a cygwin (http://www.cygwin.com/) bash under Windows XP.

Guess I need to make some changes to make the script work under Ubuntu.

I intend running the script against 3000 machines, is a smbmount my only option.

Thanks

John

[john_spiral]

Reply shouldn't work.



if [ `ping $machine -c1 | grep -c -i "64 bytes from ${machine}"` -eq 0 ]; then
mount ...
find ...
umount ...
fi


Heres a script I have for pinging cluster nodes:
http://projects.ninet.org/index.php/Node_Availability

see my above post, I would need to change the grep command with an Ubuntu ping reply.

[Pvt_Ryan]

My version is linux specific.

[john_spiral]

thanks for the code Pvt_Ryan,

Would the "64 bytes" always be true in your grep statement?

More info on my script

I was looking for a one liner command that I could plug into a spreadsheet column of computer names.

[Pvt_Ryan]

yes it is always true.

for a spreadsheet use a csv file.

then you could do something like:

machineName, MachineIP
dozer,192.168.2.1
dozer2,192.168.2.2
dozer3,192.168.2.3



i=0;
for $line in `cat spreadsheet.csv`;
do
ip=`echo $line | cut -f2 -d","`;
if [ $i -ne 0 ]; then
if [ `ping $ip -c1 | grep -c -i "64 bytes from ${ip}"` -eq 0 ]; then
....
else
echo "$ip could not be pinged" >> /var/log/mylogfile;
fi
fi
i=1;

i is used as the 1st line of the csv is headers.

[Pvt_Ryan]

just updated the script as i forgot to pull the ip from the file.

[lykwydchykyn]

The whole ping thing may not be necessary, if you smbmount. If smbmount fails, you can just skip the find command. e.g.:



smbmount //machine1/C$ ~/temp -o user=someuser,pass=somepass
if [ $? -ne 0 ]; then
find #etc etc
fi


You could also use smbclient to attach to the machines, but you wouldn't be able to use "find"; that approach would only work if you know the specific directory you want to list. To use "find", you'll need to mount the remote system locally, AFAIK.

[mssever]

Why parse ping's output? Just use its exit code.
if ping -c1 -w2 somehost >/dev/null 2>&1; then
# do stuff
fi

[john_spiral]

thanks for all the input so far.

I finally settled on the below one liner:


smbmount //WINDOWSMACHINE/C$ /mnt/win sec=ntlmv2i -o user=USERNAME,pass=PASSWORD,ro; if [ $? == 0 ]; then cd /mnt/win/DOCUME~1; find . -maxdepth 1 -type d | sed "s#^.#$(pwd)#" >> /home/myusername/Desktop/dir_list.txt; cd /mnt; fi; smbumount /mnt/win/; sleep 1

Gives a directory listing for 'Documents and Settings' on machine 'WINDOWSMACHINE'.

Ideally it would be nice to extend the script to read a list of machines from a text file and then preform an action on the output of:
find . -maxdepth 1 -type d | sed "s#^.#$(pwd)#"

I had a go at Pvt_Ryan's csv script but I'm punching above my weight.

I've finally settled on compositing a script using Open Office Calc, pasting the final contents into a text file. Beautiful no, but it works.

Thanks again

John