The Linux system information is stored in the file, and the file is similar to the ordinary official document. Each file has its own name, content, storage address, and some other management information, such as the user, the size of the file, etc. The file can be a letter, a address book, or a source statement of the program, the data of the program, can even include executable programs and other non-text content. The Linux file system has a good structure, and the system provides a lot of file handler. Here mainly introduces the commonly used file processing commands.
