INT301

What does the pwd command accomplish?

• It prints the name of the working directory.

• It changes the current working directory.

• It prints wide displays on narrow paper.

• It parses Web page URLs for display.

How do the > and >> redirection operators differ?

• The > operator creates a new file or overwrites an existing one; the >> operator creates

  a new file or appends to an existing one.

• The > operator creates a new file or overwrites an existing one; the >> operator

  appends to an existing file or issues an error message if the specified file doesn’t exist.

• The > operator redirects standard output; the >> operator redirects standard error.

• The > operator redirects standard output; the >> operator redirects standard input.

You want to discover the sizes of several dot files in a directory. Which of the following

commands might you use to do this?

• ls -la

• ls -p

• ls -R

• ls -d

Which of the following commands would you type to enable world read across access to the

file myfile.txt? (Assume that you’re the owner of myfile.txt.)

• chmod 741 myfile.txt

• chmod 0640 myfile.txt

• chmod u+r myfile.txt

• chmod o+r myfile.txt

What is a shell script?

• group of commands

• a file containing special symbols

• a file containing a series of commands, written to perform certain task(s).

• group of functions

The first line in any shell script begins with a _____

• &

• !

• $

• #

To run the script, we should make it executable first by using _____

• chmod +x

• chmod +r

• chmod +w

• chmod +rwx

Which command is used for making the scripts interactive?

• grep

• input

• read

• write

The first argument is read by the shell into the parameter ___

• 1$

• $3

• $$

• $1

The complete set of positional parameters is stored in ______ as a single string.

• $n

• $#

• $*

• $$