Mastering Linux Shell Scripting - Second Edition

Questions

1. What is the problem with the following code? And how do we fix it?

#!/bin/bash 
var1 ="Welcome to bash scripting ..." 
echo $var1 

2. What is the result of the following code?

#!/bin/bash 
arr1=(Saturday Sunday Monday Tuesday Wednesday) 
echo ${arr1[3]} 

3. What is the problem with the following code? And how do we fix it?

#!/bin/bash 
files = 'ls -la' 
echo $files 

4. What is the value of the b and c variables in the following code?

#!/bin/bash 
a=15 
b=20 
c=a 
b=c