Mastering Linux Shell Scripting - Second Edition

Questions

1. How many lines will be printed on screen from the following script?

#!/bin/bash 
for (( v1 = 12; v1 <= 34; v1++ )) 
do 
echo "$v1" 
done > output 

2. How many lines will be printed on the screen from the following script?

#!/bin/bash 
for (( v=8; v <= 12; v++ )) 
do 
if [ $v -ge 12 ] 
then 
break 
fi 
echo "$v" 
done 

3. What is wrong with the following script? And how can you fix it?

#!/bin/bash 
for (( v=1, v <= 10, v++ )) 
do 
echo "value is $v" 
done 

4. How many lines will be printed on the screen from the following script?

#!/bin/bash 
count=10 
while (( count >= 0 )) ; do 
echo $count 
done 
$((count--)) 
exit 0