1/1/2024 0 Comments Winrar unzipSo the copy has a newer creation time than the last modification time. It is the time a file was created in the current directory which means if a copy of a file is made, the copy gets a new creation time being the current time while the last modification time is not changed. This file time has nothing to do with file contents. The creation time which is the time a file was created in the current directory.Archivers like 7-Zip, WinRAR or WinZIP store the last modification time of a file (or directory being in real also a file in file system with special attribute directory) on adding a file to an archive and restore the last modification time on extracting a file from an archive. The last modification time which is the time the file contents was last modified.There are three file times available on NTFS using the NTFS precision time. The system drive with the Windows folder is by default using NTFS as file system. See Find out if file is older than 4 hours in batch file on Stack Overflow for a comprehensive description. Automatic adjustment for daylight saving time.$ unrar x /media/data/homes-backup.rar homes-backup/ path_to_extract\įor a complete listing of commands and switches simply run: $ rar a -r -rr10p -s /media/data/homes-backup.rar examples General syntax $ unrar command - switch 1 - switch N archive files. I named it 'home-list' in this example but you can call it anything you want: In this example, the list will be three lines long. Task: backup /home/darkhorse and /home/palomino and /home/seabiscuit to /media/data/homes-backup.rar.įirst create a list (simple text file) containing the various targets.Recursively compress many directory structures using a list Ignore the compression option and store all. Use the highest level of compression (m0 = store. $ rar a -r -rr10p -s -m5 -msjpg mp3 tar /media/data/darkhorse-backup.rar /home/darkhorse Task: backup /home/darkhorse to /media/data/darkhorse-backup.rar:.You can also use mixed-mode archives which means that file types you specifiy do not get compressed - they simply get stored. This way up to 10% of the compressed archive can become corrupt or unusable, and it will be able to recover the data through parity. Recurse subdirectories (includes all dirs/files under the parent directory).Īdds recovery records to the archive. $ rar a -r -rr10p /media/data/darkhorse-backup.rar /home/darkhorse Task: backup /home/darkhorse to /media/data/darkhorse-backup.rar using 10 % recovery records:. ![]() Recursively compress an entire directory structure RAR compression examples General syntax $ rar command - switch 1 - switch N archive files.rar a complete listing of commands and switches, see the last section of this article or simply run rar. Switches=-m5 -rr5p -ol -s -md64 -msmp3 mp4 avi mkv zip 7z rar tar gz bzip2 zst jpg jpeg gifįor a complete listing and explanation of rar's switches, see rar(1). ![]() Switches= any_RAR_switches_separated_by_spaces ![]() The syntax of the file is simply the following string: in the user's home directory) or if you wish to define a global set of options for all users, in the /etc directory. RAR for Linux reads configuration information from the file ~/.rarrc (i.e. Install the rar AUR package for both RAR and UnRAR, unrar for just UnRAR, or unrar-free for a FOSS implementation of unrar. In newer versions, password protection can optionally protect filenames too, so that the filenames contained within the archive will not be displayed without the right password. The only known ways to recover an encrypted file are via dictionary or brute force attacks. Older versions of the file format used a proprietary algorithm newer versions use the AES encryption algorithm, a block cipher adopted as an encryption standard by the U.S. Most currently used compression formats (with the exception of the older ZIP) allow solid structuring. RAR archives can be of a solid format, in which all of the compressed files are treated as a single data block.RAR does not support tapes, as it uses seek and rename operations on its files. partXXX RAR file, without the need to manually copy and then rejoin the pieces, or for extracting a file from a single piece without needing all pieces. Built-in support for multi-volume files enables the unpacking program to simply prompt the user for the next. RAR is able to efficiently handle split volumes. ![]() On its own, Tar does not have this ability. Even if parts of an archive are damaged, it is possible to fully recover the stored data if a large enough recovery record exists.
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