Which of the following is not a shell wildcard?

The option used when sorting files containing only numbers is

Which command is used to kill the last background job?

Which parameter is used by the shell to read the first command-line argument?

 ____ option is used for checking whether a particular file is older than a specified file.

The script command is used for _____.

Which component of the Unix operating system is known as the 'heart' of the system?

Which of the following functions are performed by an interactive shell?

The command used to quit after selecting the first 3 lines from the file 'emp.lst' is:

We can use the greater than (>) symbol with the at command to redirect our output to a specified file.