6.1.2 Migrating to a different file system.6.1 Converting the type of a file system.5.1 Unix and Unix-like operating systems.4.9 Minimal file system / audio-cassette storage.3.11 Multiple file systems within a single system.3.5 File system as an abstract user interface.It is responsible for arranging storage space reliability, efficiency, and tuning with regard to the physical storage medium are important design considerations. The file system manages access to both the content of files and the metadata about those files. Some file systems are "virtual", meaning that the supplied "files" (called virtual files) are computed on request (such as procfs and sysfs) or are merely a mapping into a different file system used as a backing store. Some file systems are used on local data storage devices others provide file access via a network protocol (for example, NFS, SMB, or 9P clients). In some cases, such as with tmpfs, the computer's main memory ( random-access memory, RAM) is used to create a temporary file system for short-term use. Other kinds of media that are used include SSDs, magnetic tapes, and optical discs. As of 2019, hard disk drives have been key storage devices and are projected to remain so for the foreseeable future.
#SET FILE MODIFCATION TIME TO OLDEST FILE TIME ISO#
For example, the ISO 9660 file system is designed specifically for optical discs.įile systems can be used on numerous different types of storage devices that use different kinds of media. Some file systems have been designed to be used for specific applications. Each one has different structure and logic, properties of speed, flexibility, security, size and more. There are many different kinds of file systems. Taking its name from the way a paper-based data management system is named, each group of data is called a " file." The structure and logic rules used to manage the groups of data and their names is called a "file system." By separating the data into pieces and giving each piece a name, the data is easily isolated and identified. Without a file system, data placed in a storage medium would be one large body of data with no way to tell where one piece of data stopped and the next began, or where any piece of data was located when it was time to retrieve it. With the above corrected (apart from the choice of which date to use), we end up with for f in /path/* do mv -n "$f" "$_rbc_$(date -r "$f" +'%d%m%Y')" doneĪnother thing to consider is that if you're doing this more than once in the same place, you might want to move the files to a different directory or test to see if they already have a plausible suffix (either remove it before adding the new one, or just leave such files untouched).In computing, file system or filesystem (often abbreviated to fs) is a method and data structure that the operating system uses to control how data is stored and retrieved. Your description implies that you want the filename to be in lower case. You're using date of modification, not creation date (which isn't kept, on most filesystem types). The format string for date doesn't match your description (and you probably want month and day rather than minute and short-date) You missed the $ in the $(.) command substitution. The destination needs to be the transformed name. You probably want for f in /path/* to consider every file in the /path/ directory (if you want to consider files in subdirectories, that's a whole nother question). Your command has a few problems: for f in /path do mv -n ""$f"_RBS_(date -r "$f" +"%Y%M%D")" doneįor f in /path will only go once around the loop (with f = /path).