Unix is designed to be a more open operating system than closed, so 'hiding' data is not something that is typically done. The operating system does not really have any way of hiding data, other than the use of encryption, or steganography, etc., which really aren't a function of the operating system software.
Unix commands
There are no actual "hidden" files in Unix. The only way to hide the existence of a file is to place it in a folder that no one has read permissions for.
Files in unix operating systems with a '.' character as the first character in the filename are hidden.
+h The above answer is incomplete and incorrect; "normally hidden" files in Unix merely start with the '.' character and are not normally shown by the ls command. Use the 'mv' to rename it if it doesn't start with a period.
For example struct tm and struct stat are often used by UNIX processes.
1. System V 2. BSD 3. countless unix-like, unix-based, unix-compatible, unix-inspired systems (linux, AIX, Sinix, Xenix, Dynix, Solaris, MacOs etc)
There have been over a hundred types of UNIX operating systems developed over the years to accommodate different types of hardware. FreeBSD, MacOS X Server, Red Hat Linux, and AIX are all UNIX-based systems.
This network storage and data management software for Unix can be downloaded from Network Appliance (Net App). It backs up and restores your data, and make tasks simpler.
D
Unix can host different database systems, so it depends on which database you are referring to. A dba will do the same types of things in Unix as you would in any other operating system.
A hidden file in Unix is any file that starts with a '.' in the name. Any utility that creates files can create a hidden file. Note: it is important to know that a hidden file is usually one that doesn't need to be shown in a directory listing all the time so unless you use the special option to show them they won't show up in a listing. Other than that, they have no special attributes.
dd is an abbreviation for "data definition." It is often jokingly said to stand for "destroy data."