THE FILE SYSTEM

In Linux system, everything is a file. A picture, an MP3 song, a text file, is a file.

What about directories? A folder would be more familiar name for directory. And guess what, a directories, sub directories and sub-sub directories and etc too are a type of file. It is just a type of special files that contains other file information.

Even the network connection are files and every processes running in the system are files.

CASE SENSITIVE SURROUNDINGS

In Linux world, every files must be unique and every name of the files are case sensitive. For example;

“ThisIsAFile.txt” is completely different from “thisisafile.txt”

Case-sentivity means every commands and filenames must be entered correctly or it may result in different outcome that you does not wish it to happen. For example;

$rm thisisafile.txt

The command above only remove the file with name thisisafile.txt and you can’t use RM, rM or Rm for the command. (rm stands for remove by the way)

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