title: Set variables for multiple linux Scripts from external file
body: <p>I have a linux script job that is made up of 7 scripts in total to complete the job.
  There are about 60 Variables defined at the start of each script.
  These variables will be constant &amp; identical in each of the 7 scrips.</p>
  
  <p>The problem I have is that when I am working on the scripts, I have to copy paste all variables to all scripts each time I update or modify variable(s)</p>
  
  <p>Is there a way that I can define all the variables in a file "variables.txt" &amp; somehow reference all these variables from variables.txt at the start of each script?</p>
  
  <p>I was thinking of using sed, but there is probably an easier &amp; cleaner way..</p>