Bash can handle this task with ease:
#!/bin/bash# File: format_output.shwhile read server instancesdo for instance in $instances do echo "Server: $server, Instance: $instance" donedone
To use it:
$ bash format_output.sh < myfile.txt
If awk is allowed, something like
awk '{for(i=2;i<=NF;i++) print "Server: " $1 ", Instance: " $i }' < myfile.txt