Which of the following lines have an error?

 1. echo enter your name

2. read filename

3. read name < $filename

4. echo $name

What's the error in the following program?

Which assignment is illegal?

What is the output of the following program?

The break statement is used to exit from:

What is the error in the following program?

Which variable name is invalid?

The expression expr -2 % 7 evaluates to:

The statement z=`expr 5 / 2` would store which value in z?

What is the error in the following loop statement?

Which one is not a shell keyword?