Command line challenge set at the end of week 1 @makersacademy
- Change into the temporary directory
- Using one command, create a directory structure "my/private/files"
- Using one command, create a directory structure "my/public/files"
- Create an empty file 't-vars.env' in my/private/files
- Using command-line only add the line "List of env vars that begin with T" to the file, make sure it ends with a newline
- List all env variables that begin with "T" (hint: you'll need a regex that includes the marker of the start of the line) and append them to the end of the file
- Export a new variable TESTING_MAKERS=working in such a way that it is still available when you open a new shell
- Open a new terminal window, check that a new variable is available
- Output the count of the variables that begin with T to a new file my/public/files/t-vars.count, e.g. "Overall count: 5" (hint: you'll need to use 'command substitution' in bash)
- Change the permissions of the my/private/files/t-vars.env to make sure that only the owner can read and write the file
- Change the permissions of the my/private/files directory to make sure that only the owner can change into it
- Give read and write permissions to all users on my/public/files/t-vars.count
- Create another file my/public/files/text-files-count.txt and output the number of text files in your home directory (recursively) into that file
- List all env variables sorted alphabetically and show the top 3 lines