The “System Files” drive is the root of the OS tree, so it’s a good place to start scanning for the things you want to know about. This is also where commands like the “ls” command are usually located.
All the files in the System Files are the ones that will be used to run programs and execute file-modifications. These files are organized by their location on the disk. They can be found by searching for the file name. They can also be found by typing “ls” into a terminal and hitting enter.
When you run ls in Terminal, you will see that all the system files are listed in alphabetical order. This is because the order in which a file is stored on the hard drive is determined by the OS. Operating systems follow a hierarchy, which means each file is stored on a different level of the filesystem. The order of files in the System Files is determined by the order in which they are listed in the directory tree.
For example, if you were to run the command ls *.jpg or ls ~/Pictures/jpeg or ls ~/Pictures/img will show you all the images in the /home/joe/Pictures folder.
The problem is that if you wanted to scan all those files in the home folder, all you would need to do is run the command ls Picturesjpeg and that command would scan all the images in the Pictures folder. However, if you wanted to scan all the pictures in the Pictures folder, you would have to run the command ls Picturesjpeg Pictures and that command would scan all the images in the Pictures folder.
The problem with this is that the command ls Picturesjpeg Pictures will also show you every file in the Pictures folder, which is a bit redundant. You can check the contents of the Pictures folder with another command, ls Picturesimg Pictures.
And by the way, you could just check the contents of the Pictures folder with the command ls Pictures and that command would give you the same result as ls Picturesjpeg Pictures. For example, you could check the contents of the Pictures folder with the command ls Picturesimg Pictures with ls Picturesjpeg Pictures, or ls Picturesjpeg Pictures with ls Picturesimg Pictures.
You can check the contents of the Pictures folder and all the sub-folders with two commands: ls pictures and ls Picturesimg Pictures. But if you want to check the contents of a particular subfolder without knowing the name of the folder, you can use the command ls Picturesimg Pictures but that command can’t check for sub-folders.
In short, the Pictures folder contains all the images and jpgs on your computer. It is likely that you already know the name of this folder (it’s usually C:). To the best of my knowledge, you can’t search for sub-folders of a folder with the ls command.
To check the contents of a sub folder use the ls command. But if you want to check the contents of a particular sub-folder without knowing the name of the folder, you can use the ls command but that command cant check for sub-folders.