Script to obtain hardware and OS information

I’ve just been tasked to obtain the version of Solaris and the type of Sun workstation the user is using.  I know the uname –a command can give me the info I need.  What I don’t want to do is have to telnet to over 400 machines.  Is there a way, I can write a script which rsh’s to each machine by it’s IP address (5.212.144.xxx, 5.212.145.xxx) and write the output of each machine’s uname –a to a text file?  

Thanks,

Brian
bpb25Asked:
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liddlerCommented:
You will have to set up the .rhosts file on each machine to do that ( or .ssh/authorized_keys if you use ssh).  So if you haven't already  done that, logging into each machine and running the uname command will be as quick.  If however you want to do it , so you can do it again later.
After you have set up your .rhosts file

x==0
while ( $x < 255)
do
rsh uname -a 5.212.144.$x >> /tmp/vers.txt
x=expr ($x + 1)
done

I'm not in front of a unix box at the moment, so my syntax may be a bit dodgy, try it and post the errors
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bpb25Author Commented:
Ran the script, here's the error I got.

syntax error at line 7: 'x=expr' unexpected

Luckily the majority of the machines already have a .rhosts in place.

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liddlerCommented:
x=`expr ($x+1)`
back single quotes, for a command substitution
0
glassdCommented:
To make the math a bit easier, use Korn shell. Also the rsh line looks a bit odd. And only one subnet was tried. Try:

#!/bin/ksh
x==0
while ( $x < 255)
do
rsh 5.212.144.$x iuname -a >> /tmp/vers.txt
rsh 5.212.145.$x iuname -a >> /tmp/vers.txt
((x = x + 1))
done


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sagar24Commented:
Hi
You must have remote authentication database set
So create a file /.rhosts(assuming you  will remotely login as root)
enter your system name
create a script  and execute the script
#/bin/sh

x=1
for i in 144 145
do
while($x < 255)
do
rsh 5.212.$i.$x uname -a >> /tmp/info.txt
x=`expr $x + 1`
done
done

regards
sagar
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