What do you have to do to the script to be able to execute it? Why does the script use the read builtin the first time it accepts input from the terminal and the cat utility the second time?

Microsoft Visual C#
7th Edition
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Joyce, Farrell.
Chapter14: Files And Streams
Section: Chapter Questions
Problem 1DE
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The following shell script adds entries to a file named journal-file in your home directory. This script helps you keep track of phone conversations and meetings.

$ cat journal

# journal: add journal entries to the file

# $HOME/journal-file

file=$HOME/journal-file

date >> $file

echo -n "Enter name of person or group: "

read name

echo "$name" >> $file

echo >> $file

cat >> $file

echo "----------------------------------------------------" >> $file

echo >> $file

  1. What do you have to do to the script to be able to execute it?
  2. Why does the script use the read builtin the first time it accepts input from the terminal and the cat utility the second time?
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