Key Points

- `cp [old] [new]` copies a file. - `mkdir [path]` creates a new directory. - `mv [old] [new]` moves (renames) a file or directory. - `rm [path]` removes (deletes) a file. - `*` matches zero or more characters in a filename, so `*.txt` matches all files ending in `.txt`. - `?` matches any single character in a filename, so `?.txt` matches a.txt but not `any.txt`. - Use of the Control key may be described in many ways, including `Ctrl-X`, `Control-X`, and `^X`. - The shell does not have a trash bin: once something is deleted, it’s really gone. - Most files’ names are `something.extension`. The extension isn’t required, and doesn’t guarantee anything, but is normally used to indicate the type of data in the file. - Depending on the type of work you do, you may need a more powerful text editor than Nano.

3. Working with Files and Directories