Shell script environmental variable Here are two programs called prog1 and prog2: $ cat prog1 e1=100 export e1 e2=200 e3=300 prog2 $ cat prog2 echo “e1=$e1 e2=$e2 e3=$e3 e4=$e4” A. Create the above programs in your CS server Linux account. B. What output do you get after typing the following? (List and explain the output after each execution of prog1.) $ prog1 $ export e2=20 $ prog1 $ export e3=30 $ prog1 export e4=40 $ prog1

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Shell script environmental variable

Here are two programs called prog1 and prog2:

$ cat prog1

e1=100

export e1

e2=200

e3=300

prog2

$ cat prog2

echo “e1=$e1 e2=$e2 e3=$e3 e4=$e4”

A. Create the above programs in your CS server Linux account. B. What output do you get after typing the following? (List and explain the output after each execution of prog1.)

$ prog1

$ export e2=20

$ prog1

$ export e3=30

$ prog1

export e4=40

$ prog1

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