Pipes is/are :

Which command would make the scope of a shell variable global to the subshells ?

Which of the following statements is incorrect ?

Who can change the password of a user account?

What is the correct command to delete all files with two character file-names from the directory /user/group2 ?

Study the following statements and select the incorrect one :

In an ls listing, 'l' 's' and '-' indicate:

When you first log in to a Unix system, the login program performs various security measures. Which is not one of these security measures?

To display or set your terminal characteristics, you use the command:

The superuser can:

What is the default maximum number of open files a user can have?