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Having a for loop read in lines with spaces?

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# 1  
Old 10-29-2010
Having a for loop read in lines with spaces?
Is this possible?

I have a for loop in a shell script reading a list, but I want each line to be a loop, not each thing with a space.

Here is the example:
Code:
HOSTLIST="\
1.2.3.4 serverA
1.2.3.5 serverB"

for NBUHOST in `echo $HOSTLIST`
do
    ssh ${SERVERNAME} "echo "${NBUHOST}" >>/etc/hosts"
    echo "${NBUHOST}"
done

With the way that is now it takes 1.2.3.4 and puts it in the hosts file, then takes serverA, then loops with 1.2.3.5, then loops again with serverB.

How can I make it so a whole line, space included is considered an NBUHOST and not each entry with a space delimited?
Last edited by Scott; 10-29-2010 at 02:05 PM.. Reason: Please use code tags
# 2  
Old 10-29-2010
Hi.

for treats its arguments as words (that is, each whitespace-separated argument is a word).

It's better to use a while-loop:

Code:
HOSTLIST="\
1.2.3.4 serverA
1.2.3.5 serverB"

echo "$HOSTLIST" | while read NBUHOST
do
    ssh ${SERVERNAME} "echo ${NBUHOST} >>/etc/hosts"
    echo "${NBUHOST}"
done

# 3  
Old 10-29-2010
try:
Code:
#1.2.3.4 serverA
#1.2.3.5 serverB

for NBUHOST in   '1.2.3.4 serverA'  '1.2.3.5 serverB'
do
    ssh ${SERVERNAME} "echo "${NBUHOST}" >>/etc/hosts"
    echo "${NBUHOST}"
done

# 4  
Old 10-29-2010
Code:
while read myIP myHost
do
echo "$myHost ......"
eval ssh ${myHost} "echo \"${myIP}\" >>/etc/hosts"
done<(echo $HOSTLIST)

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