Bash Scripting

Prompts and answers

• What piece of code can we insert at the start of a line to comment out our code?
  #
• What will the following script output to the screen, echo “BishBashBosh”
  BishBashBosh
• What would this code return?
  Jammy is 21 years old
• How would you print out the city to the screen?
  echo $city
• How would you print out the country to the screen?
  echo $country
• How can we get the number of arguments supplied to a script?
  $#
• How can we get the filename of our current script(aka our first argument)?
  $0
• How can we get the 4th argument supplied to the script?
  $4
• If a script asks us for input how can we direct our input into a variable called ‘test’ using “read”
  read test
• What will the output of “echo $1 $3” if the script was ran with “./script.sh hello hola aloha”
  hello aloha
• What would be the command to print audi to the screen using indexing.
  echo "${cars[1]}"
• If we wanted to remove tesla from the array how would we do so?
  unset cars[3]
• How could we insert a new value called toyota to replace tesla?
  cars[3]='toyota'
• What is the flag to check if we have read access to a file?
  -r
• What is the flag to check to see if it's a directory?
  -d