project: Advanced Linux challenges

Task 1 User environment

  1. Use echo to display Hello followed by your username. (use a bash variable!)
  2. Create a variable myName with a value containing your full name.
  3. Copy the value of $LANG to a new variable called $MyLANG.
  4. List all current shell variables.
  5. Create a nodejs/python script that fetch all created variable and prints/logs them out

Resources

  1. https://dzone.com/articles/linux-environment-variables
  2. https://codeburst.io/how-to-create-shortcut-commands-in-the-terminal-for-your-mac-9e016e25e4d7

Task 2 Bash and basic scripting

  1. Write a bash script that prints Welcome to my world! on the screen
  2. Modify the shell script from point (1) to include a variable. The variable will hold this valuee Welcome to my world!
  3. Store the output of the command hostname in a variable. Display This script is running on _. where _ is the output of the hostname command.
  4. Write a shell script to check to see if the file “file_path” exists. If it does exist, display “file_path passwords are enabled.” Next, check to see if you can write to the file. If you can, display “You have permissions to edit “file_path.””If you cannot, display “You do NOT have permissions to edit “file_path””
  5. Write a shell script that displays man, bear, pig, dog, cat and sheep on the screen with each appearing on a separate line. Try to do this in as few lines as possible.
  6. Write a shell script that prompts the user for a name of a file or directory and reports if it is a regular file, a directory, or another type of file. Also perform an ls command against the file or directory with the long listing option. If that doesn’t make sense please try these on: ls --help and man ls
  7. Modify the previous script to that it accepts the file or directory name as an argument instead of prompting the user to enter it.
  8. Write a shell script that displays, This script will exit status 0. Be sure that the script does indeed exit with a 0 exit status.
  9. Write a shell script that accepts a file or directory name as an argument. Have the script report if it is reguler file, a directory, or another type of file. If it is a directory, exit with a 1 exit status. If it is some other type of file, exit with a 2 exit status.

Resources

  1. https://ryanstutorials.net/bash-scripting-tutorial/bash-script.php
  2. https://www.taniarascia.com/how-to-create-and-use-bash-scripts/
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