Shell Programming and Scripting

flat file looks like
ooss-pfgg-1234,vol_name_1, mail-list

decoded =
hostname,volum_name,mail_list
each line has diff info
am trying to ssh into each fist field, check vol usage for second field, and if greater than 90% send mail to mail-list

got the second and third part working,

first part am stumped

for i in `cat list.csv`; do ssh `awk 'FS="[, ]" {print $1}'` ; ????

how do i get the ssh command to pick up the awk variable ?

You're on the right track. This should be enough of an example. Replace the date command with whatever you need to execute on the other side.

Code:

#!/usr/bin/env ksh 
awk  -F, '{print $1}' your-csv-file-name | while read host
do
        ssh $host date
done

I believe that this only works in ksh; bash has issues reading from a pipe into a variable. For bash you will probably have to do something like this:

Code:

for host in $( awk  -F, '{print $1}' file )
do 
      ssh $host date
done

This has potential problems if the number of host names in file becomes too large to be supported as a list of arguments for the for command. My recommendation is to go with Kshell.