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Old 05-24-2013, 01:00 PM   #1
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just wondering if my code is sound for running a command remotely on server list

I have a list of IP's that I've put into a file called servers.txt. These boxes all have the same root password for testing this.

Then I was going to run something like:

file = servers.txt
for i in $file
ssh $i -i identityfile.txt 

##run commands here

Would that work for this type of exercise or have I missed something?
Old 05-24-2013, 01:21 PM   #2
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No. That will just read:

for i in servers.txt
ssh servers.txt -i ..
I imagine you'll ask how I would do it.

for i in `cat servers.txt`
ssh $i ....

Last edited by szboardstretcher; 05-24-2013 at 01:24 PM.
Old 05-24-2013, 11:42 PM   #3
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makes sense...thanks.
Old 05-24-2013, 11:58 PM   #4
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It's recommended to use while+read instead of for loop for reading input from a file:
while read -r ip
ssh $ip -i identityfile.txt 
##run commands here
done < $file
Just check this out:


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