• root is the beginning or the top point of the Unix File System under which directories important to a Unix OS resides. It is different from a root user of the system.

• Each directory contains set of files and programs which are required for the proper functioning of the OS.

• Out of all the directories, /home/ and /opt/ are two important directories for this eYRC Theme.

• /opt/ is the directory or folder where the packages or software which you are going to install using package manager (apt-get in Ubuntu) is going to reside.

• /home/ is the folder where all your personal files including project files is going to reside.

• /bin/ is the folder where most common Linux commands resides. Commands like ls, chmodetc.

References

1. What is Linux File System? Easy Guide
2. Learning the Linux File System