{"id":100254,"date":"2021-08-17T09:00:14","date_gmt":"2021-08-17T03:30:14","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=100254"},"modified":"2021-08-07T16:15:36","modified_gmt":"2021-08-07T10:45:36","slug":"os-file-system","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/os-file-system\/","title":{"rendered":"OS File System"},"content":{"rendered":"

We can define a file as a named collection of related information recorded on secondary storage. Some secondary storage devices are magnetic disks, magnetic tapes and optical disks. A file is a combination of bits, bytes, lines or records that are defined by the files creator and user.<\/p>\n\n\n\n\n\n\n\n\n\n\n
Attributes<\/b><\/td>\nTypes<\/b><\/td>\nOperations<\/b><\/td>\n<\/tr>\n
Name<\/span><\/td>\nDoc<\/span><\/td>\nCreate<\/span><\/td>\n<\/tr>\n
Type<\/span><\/td>\nExe<\/span><\/td>\nOpen<\/span><\/td>\n<\/tr>\n
Size<\/span><\/td>\nJpg<\/span><\/td>\nRead<\/span><\/td>\n<\/tr>\n
Creation Data<\/span><\/td>\nXis<\/span><\/td>\nWrite<\/span><\/td>\n<\/tr>\n
Author<\/span><\/td>\nC<\/span><\/td>\nAppend<\/span><\/td>\n<\/tr>\n
Last Modified<\/span><\/td>\nJava<\/span><\/td>\nTruncate<\/span><\/td>\n<\/tr>\n
Protection<\/span><\/td>\nclass<\/span><\/td>\nDelete<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n
File Type<\/strong><\/td>\nUsual Extension<\/strong><\/td>\nFunction<\/strong><\/td>\n<\/tr>\n
Executable<\/span><\/td>\nexe, com, bin<\/span><\/td>\nRead to run machine language program<\/span><\/td>\n<\/tr>\n
Object<\/span><\/td>\nobj, o<\/span><\/td>\nCompiled, machine language not linked<\/span><\/td>\n<\/tr>\n
Source Code<\/span><\/td>\nC, java, pas, asm, a<\/span><\/td>\nSource code in various languages<\/span><\/td>\n<\/tr>\n
Batch<\/span><\/td>\nbat,sh<\/span><\/td>\nCommands to the command interpreter<\/span><\/td>\n<\/tr>\n
Text<\/span><\/td>\ntxt, doc<\/span><\/td>\nTextual data and documents<\/span><\/td>\n<\/tr>\n
Word Processor<\/span><\/td>\nwp, tex, rrf, doc<\/span><\/td>\nVarious word processor formats<\/span><\/td>\n<\/tr>\n
Archive<\/span><\/td>\narc, zip, tar<\/span><\/td>\nRelated files grouped into one compressed file<\/span><\/td>\n<\/tr>\n
Multimedia<\/span><\/td>\nmpeg, mov, rm<\/span><\/td>\nFor containing audio\/video information<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

File directories in Operating System<\/h3>\n

A file directory is a collection of files. It contains information regarding the files like their name, type, address, current and maximum length, last accessed, last updated, owner id, protection information, location, ownership, etc.<\/p>\n

The information regarding storage is managed by the OS. A file directory is a file in itself that is accessible through various file management routines. Some operations that we can perform on a directory are: Searching for a file, Creating a file, Deleting a file, Listing a directory, Renaming a file, and Traversing the file system.<\/p>\n

Advantages:<\/h4>\n