What is the preservation of cases?
Case maintaining is the ability of a computer file system to remember the capitalization that is used when creating a file. Many popular operating systems have cases, while older operating systems and some Shell programs are not. One of the main uses for protection of cases is operating systems that enforce sensitivity to cases, which means that capital letters are considered separate symbols from lowercase letters. Another use to maintain a file name case is to allow users to use their own formatting techniques that will be displayed by the operating system, sometimes leads to a clearer look. In operating systems that do not use cases, the default behavior may vary, but generally involves the conversion of all characters in the file name to uppercase or lowercase. During the early period of computer technology, the discostor was on the bonus and led to the development of various methods to help save as much space as possible. Early file systems have ever forced the name SOUBor in all letters with lowercase letters or uppercase letters, so the name can be saved more efficiently. Other systems ignored the case of letters that help maintain consistency between file names and prevent user confusion. As technology has advanced, most operating systems and file systems included support for maintaining cases.
It is important to distinguish between maintaining cases and sensitivity to cases. Just because the file system keeps the case of the file name, it does not necessarily mean that it considers lowercase letters and letters with uppercase letters as different symbols. Many operating systems retain the case, but allow users to enter the file name using any letter combinations to refer to the file. Alternatively in a system sensitive system can have the same name files, but is characterized by the capitalization of letters. Common examples include files called Readme files; In a sensitive systemIn the case, the estimated cases are Readme, Readme and Readme all different files that may exist in the same directory.
One note in name and maintaining cases is that even if a specific file system or operating system supports maintenance and does not force sensitivity to cases, programs that run in the operating system. This is especially true for emulators and programs that use command lines for input. These programs can use sensitivity or ignore the case in the new file based on how programmed, although the basic operating system would not normally do so.