Bash Scripting THM walkthrough
Task 1 Introduction
- no answer needed
Task 2 Our first simple bash scripts
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
Task 3 Variables
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
Task 4 Parameters
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 $3” if the script was ran with “./script.sh hello hola aloha”
- hello aloha
Task 5 Arrays
What would be the command to print audi to the screen using indexing.
- echo “${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”
Task 6 Conditionals
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
you can find the room here
