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Issues with Reading Line by line from a file

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# 1  
Old 11-11-2010
Issues with Reading Line by line from a file
I am trying to read a host name one at a time from a file which has a list of hostnames and do rsh and print . its not looping through the entire file. its breaking out after the first entry. If i comment out the rsh then it loops through file
Code:
#!/bin/ksh
filename="/tmp/hostnames";
while read -r host
do
    #i=0;
    #print $i
   NumEngines=`rsh $host "ps -ef |grep pattern|wc -l"`
    NumConnections=`rsh $host "netstat -n |grep <IP>|wc -l"`
    AvgConn=`expr $NumConnections / $NumEngines`;
    print $host     $NumEngines     $NumConnections  $AvgConn
done< $filename

Please advise what i am doing wrong
Thanks
Last edited by Franklin52; 11-11-2010 at 12:34 PM.. Reason: Please use code tags
# 2  
Old 11-11-2010
Are your remote host configured to authorized connection from your machine ?
(is your hostname added properly in the .rhost file in the account of the remote host you are trying to connect to ?)
if you manually give a try of rsh to these hosts, does it work fine ?
# 3  
Old 11-11-2010
yes manually rshing works and in this case it returns the output for the first host in the list.
# 4  
Old 11-11-2010
What Operating System and version are you using?
# 5  
Old 11-11-2010
host is a standard unix command so at first, you should choose another name for your variable

Try to run it without the -r option of the read command.
You could also make a try with the -n option of the rsh command
and use quote :
Code:
print "$host     $NumEngines     $NumConnections  $AvgConn"

Last edited by ctsgnb; 11-11-2010 at 01:05 PM..
# 6  
Old 11-11-2010
x86_64 x86_64 x86_64 GNU/Linux

Replacing host with var did not help either
# 7  
Old 11-11-2010
Hi, Can you try to run it by setting ksh -x option in the interpreter line and paste the output?
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