Need to be more specific in your question.
In Linux the chmod command is used to set file permissions.
The Linux VFS (Virtual File System) may be thought of as a sort of interface between the Linux kernel and the mounted file systems. There can be many different file system types mounted simultaneously and VFS allows the Linux kernel to see and address them all in a similar way. This provides Linux with a great deal of flexibility. [JMH]
The Linux Filesystem Hierarchy is used to help determine the file structure in the Linux Operating System. It defines the Directory structure and directory contents.
Alternate references to a file/directory.
touch newfile will make a new empty file in linux os !
The first file system Linux supported was the MINIX file system.
It means that the file or directory is used for application settings.
There is no set file manager in linux. Examples of Linux file managers include but: Nautilus (GNOME) Thunar (XFCE) Dolphin (KDE)
in terminal it is : #cp file_a file_b
ext4
The .forward file is used to forward email sent to one account to the address specified in the file.
The Linux command used to assign labels to a file system is e2label. This command is typically used for ext2, ext3, and ext4 file systems to set or change the label of the file system specified. For example, you can use sudo e2label /dev/sdX1 new_label to assign "new_label" to the file system on the specified device.