79 lines
3.3 KiB
Bash
79 lines
3.3 KiB
Bash
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#!/bin/bash
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# First, we'll define some paths to programs that we'll need. This is good
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# practice for security and it also arguably keeps the script clean
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LS="/usr/bin/ls --color=auto"
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# Next, we'll simplify the mini-quizzes by wrapping them in a function. The
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# idea behind this is to provide a safe environment for the learner to run
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# commands in, while still feeling like a bash shell.
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function test_command {
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while true; do
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read -p "$TUTOR_PROMPT" command
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case $command in
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"$1") $2; break;;
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*) echo "Hmm, that didn't quite look right. Try typing '$1' and pressing Enter"
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esac
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done
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}
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cat <<EOF
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______ __ ___ _ _ ______ _ _ ______ _____ ______
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| _ \\ / \\ / __|| | | | |__ __|| | | ||__ __|/ _ \\| _ \\
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| |_| // 0 \\ | |__ | |_| | | | | | | | | | | / \\ || |_| /
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| _ < | __ | \\___ \\| _ | | | | | | | | | | | | || <
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| |_| \\| | | | ___| || | | | | | | \\_/ | | | | \\_/ || |\\ \\
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|_____/|_| |_| |____/|_| |_| |_| \\_____/ |_| \\_____/|_| |_|
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Welcome to the interactive bash tutorial! To exit this tutorial at any \
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time, press Ctrl+C. That is, press and hold the Control Key (Ctrl), and then \
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press the C Key.
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EOF
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if [[ -z $USER ]]; then
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echo -e "What is your name?"
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while [[ -z $USER ]]; do
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read USER
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done
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echo "Great! Let's get started then, $USER"
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fi
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# The user's progress will be stored in a hidden file in their home directory.
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# This will just store a bunch of environment variables to track their
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# progress. This will be more useful as the tutorial gets longer.
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if [[ ! -e ~/.bash_tutor_progress ]]; then
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echo "USER=$USER" > ~/.bash_tutor_progress
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else
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source ~/.bash_tutor_progress
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echo "Welcome back, $USER"
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fi
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echo
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TUTOR_PROMPT="$USER@bash-tutor \$ "
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echo "First and foremost, let's get you familiar with your environemt. Bash \
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is a type of shell, which allows you to run commands on your computer or \
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server. You can think of it like a window that strips away all the fancy \
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graphics and user interfaces and leads you directly to the operating system. \
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The part of the shell where you type these commands for the computer or server \
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is called the prompt. For this tutorial, your prompt will consist of your \
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name, the '@' symbol, and the name of this tutorial (bash-tutor) followed by \
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your current working directory (the folder that you are currently in) and a $ \
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sign, which is a common convention in bash. Let's start with your first \
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command: ls. The ls command lists the files and directories in the folder that \
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you are in by default. Try running it now"
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test_command ls $LS
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echo "Great work! Most commands can also take options (also known as flags) that modify their behavior. These options are usually preceded by a single or double hyphen. For example, with ls you can pass the -l flag to list more information on each of the files and directories. Try it now:"
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test_command "ls -l" "$LS -l"
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echo "Don't worry about what all of this means right now. We'll cover it later. For now, you can practice some other flags. A good one to remember is the --help flag, which usually provides you with a list of options you can use. This is sometimes shortened to just -h. For now though, let's talk about arguments. Arguments are additional pieces of information that you can give to a command to "
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