Running set of commands in remote servers in shell script

Shell Programming and Scripting
1

Hi
Wishing to all.

I am very new joined in an organization as a unix system administrator.

I need a help in preparing a script for a report.

i have a file contains all of the linux/ubuntu servers line by line around 140 servers.

vi servers.txt

nh01
nh02
nh03
bh01
bh04
-
-
:wq

Now, my script should provide the output like below...

Server    ping_status   ssh_status   Kernal                   uptime   login_users  
nh01       pingable       ssh able    2.6.18-371.4.1.el5   24 days  30
nh02       pingable       not able     -                           -           -

please help me for the above script.

i can able to write a separate scripts for pinging or not, ssh or not, but not able to take the output in a above format.

and also, if a server is not able to ssh ..then my script gets struck there itself...its not moving further....

Thanks
Kumaraswasmy

2

Where are you stuck? Show us what you tried and error msgs received.

3

Hi Rudic,
Actually, i am able to prepare the scripts separatly ...for ping status ans ssh status ...

while read line
do
        ping -c 1 $line > /dev/null 2> /dev/null
        if [ $? -eq 0 ];then
                echo "$line is up"
        else
                echo "$line is down"
        fi
done < servers.txt

while read line
do
     ssh "$line" "uname -a; w|wc -l " < /dev/null
done < servers.txt

the above ssh script...if any server is not up, then the script is not moving further server...

mainly , i need the out put as i mentioned in the first post...

Thanks
kumaraswamy

4

Well, why then don't you run the ssh command only if the server is up? Like

...
if [ $? -eq 0 ]
    then
       printf "%s\t%s $line "pingable"
       ssh "$line" "uname -a; w|wc -l " < /dev/null
       ... error handling ...
       printf "\tssh-able"
    else
...
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