Chapter 09 Exam

The echo command:
  • Is used to output text to the console


Which of the following are correct about for and while loops?
  • for loops operate over a fixed list of items
  • while loops have a test each cycle to determine if it should run again

Given the following part of a script:
if [ -f $1 ]; then
    echo I am here
fi
What is the meaning of $1?
  • It is the first argument passed to the script


What is the correct way to assign the word "Hello" to a variable?
  • A=Hello


Which shell command accepts input from the users keyboard?
  • read

What information is held inside $? ?
  • The previous commands exit code


The if command looks for what exit code to consider a condition to be true?
  • 0


A conditional that lets you make multiple comparisons with a pattern is called:
  • case

What is the meaning of $(( $i + 1)) ?
  • 1 will be added to the i variable

How would you write a test that says if /tmp/foo is a directory or USERS is greater than 5?
  • test d /tmp/foo o $USERS gt 5
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Milan Tomic

Hi. I’m Designer of Blog Magic. I’m CEO/Founder of ThemeXpose. I’m Creative Art Director, Web Designer, UI/UX Designer, Interaction Designer, Industrial Designer, Web Developer, Business Enthusiast, StartUp Enthusiast, Speaker, Writer and Photographer. Inspired to make things looks better.

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