Look the following Bash code and determine what should be in the gap (_________)? function perform_crypto_operation() { crypto_mode=$1 input_file=$2 output_file=$3 (_______)$crypto_mode in                  "-e"|"encrypt")                           perform_encryption $input_file $output_file                     ;;                  "-d"|"decrypt")                           perform_decryption $input_file $output_file

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
Section: Chapter Questions
Problem 1PE
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Look the following Bash code and determine what should be in the gap (_________)?

function perform_crypto_operation() {
crypto_mode=$1
input_file=$2
output_file=$3

(_______)$crypto_mode in
                 "-e"|"encrypt")
                          perform_encryption $input_file $output_file
                    ;;
                 "-d"|"decrypt")
                          perform_decryption $input_file $output_file
                    ;;
                  *) # executes when mode is neither "encrypt" or "decrypt"
                         echo "Invalid Mode"
                    ;;
esac
}

Expert Solution
Step 1

Here we write in simple words to fill this gap.

========================

In base file we fill $input_file.

Explanation below:

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