The command that would append the output from the encrypter to the current contents of the file private and read in the contents of the file top_secret, is:

When you execute the command 'cp . newdir', you...

To be run by the shell, a shell script needs the following permission(s):

How does Unix maintain its time clock?

To list the current users logged on to the system you use:

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

You want to search for the pattern 'Newa' or 'Newb' or 'Newc'. Which regular expression will you use with the grep command ?

Which of the following commands can be used to view the calendar of April 2007?

In UNIX , shell is a program which :

UNIX offers the following benefits :

Study the following statements and select the incorrect one :