My Unix file from which I want to extract environment variables looks like:
var1=content1 var2=content2 var3=content3
var4=content4
var5=content5 var6=content6

I would like to convert this file to the following form to be able to convert var1... into environemnt variables:
var1=content1
var2=content2
var3=content3
var4=content4
var5=content5
var6=content6

Is it possible with sed? Thanks a lot for your help!

The following are a couple of examples of how to replace spaces with newlines:

sed 's/ /\
/g' yourFile

awk '{for (i=1; i<=NF;i++){print $i}}' yourFile

What would you do though if your file contained the following sort of data?

nastyFile
-----------
var1="value for var1" var2="value for var2"
var3="value for var3"