To see file properties, like in Windows, you can use command stat following by file or folder.
The following example shows properties of /root folder. Type stat /root
There are many ways to check Linux running processes. The “easy” ways: use small utilities like top or atop. The more powerful but more complex way to use internal linux ps command.
So to install either top or atop simply time this command. Be sure that these utilities already installed. For instance atop is usually not installed by default but supplies in most Linux distribution. In Debian for example.
It is necessary sometime to have the user which will be nobody in the system but still be able to run specific process or software on your Linux system.
Usually some packages like nginx can create such users, usually called nobody. And you can use this nobody for your purpose. But if you wish to have non privilege user user with specific name, use the simple command useradd.
For instance to create user userx run the following command: useradd -s /bin/false userx.
To newly created user try id command:
To check free space on Linux file system type: df- h
There is simple command allows you to see what is connected and loaded on your Linux system at present moment.
To easier trace modules on the system, type: ls /lib/modules/$(uname -r)