Which of the following is true about "until" loop?

If x=11 and y=6, then what is the exit status of the following expression?

Output of the following program?

Which statement is false?

Output of the following shell script code?

Condition to check whether file with name 'xyz' is a regular file?

Suppose you are writing a shell script that accepts five positional parameters from the terminal. What will be the effect of using statement 'shift 1' in your shell script and then executing the shell script?

Which loop is invalid?

What is the error in the following program?

What's the output assuming that the command line arguments are Unix shell scripting?

What is the output of the following program?