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I know all this, must making notes
the “$” is a “shell prompt” – never knew what that was called
pwd is “Print working directory”
mkdir makes a directory
touch creates a file
The command line is a text interface for the computer’s operating system. To access the command line, we use the terminal.
A filesystem organizes a computer’s files and directories into a tree structure. It starts with the root directory. Each parent directory can contain more child directories and files.
Bash, or the Bourne-Again SHell, is a CLI that was created over twenty-seven years ago by Brian Fox as a free software replacement for the Bourne Shell. A shell is a specific kind of CLI. Bash is “open source” which means that anyone can read the code and suggest changes. Since its beginning, it has been supported by a large community of engineers who have worked to make it an incredible tool. Bash is the default shell for Linux and Mac. For these reasons, Bash is the most used and widely distributed shell. If you want to learn more about Bash, this Wikipedia article is a good place to start.
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