Linux compression and archiving

The compression format in Linux is mainly composed of GZ, bz2, XZ, compress, zip

One, gzip: after compression format is. GZ (after compression and decompression, the original file is deleted)

Usage: gzip [optinons] FILENAME ...

-D: Decompression, equivalent to using Gunzip

-F: Forced decompression

-Q: Do not display warning messages

-#:[0-9] Specify compression ratio

Compression level, 0-2 for fast compression, 3-5 for medium compression, 6-9 for excellent compression, 6 for default

-L: Lists information about compressed files

-R: Recursively handles all files under the specified directory

-T: Test for compressed files with errors

Zcat: In the case of uncompressed, view the contents of the compressed file

Second, bzip2: Compressed after the format of. BZ2, greater compression than gzip, usage and gzip the same

-K: Preserve source files when compressing or decompressing

-D: Decompression, equivalent to using BUNZIP2

-#: Specify compression ratio

Bzcat: In the case of uncompressed, view the contents of the compressed file

Third, XZ: The format is XZ after compression, the new compression tool has a higher compression ratio

-Z: Forced compression

-D: Forced decompression, equivalent to UNXZ

-T: Testing the integrity of compressed files

-L: View more information

-K: Compress or decompress reserved source files

-F: Extract mandatory overwrite file

Xzcat | Xzdec: In the case of uncompressed, view the contents of the file

Four, conpress: After the format is compressed. Z, which is rarely used, is not supported in some Linux distributions

Zip: Zip compression and archive after compression, do not delete source files after compression

Usage: Zip [Optinos] filename.zip FILE1, FILE2 ...

Compression requires a compressed file name Filename.zip

-C: Add comments to a compressed file

-M: Delete source files after compression

-K: DOS compatible

-b<path>: Making compression to the directory

-R: Recursive processing

Zipinfo: View details of files in compressed files

unzip unzip. zip

-O: Do not ask the user, overwrite the source file directly when extracting

-L: Display information for compressed files

-L: Change file name of compressed file to lowercase

-V: The execution is to display more information

-N: Source file not overwritten when uncompressed

. zip file: Specify the files to process

-X File: Specifies a file that is not processed

-Z: equivalent to using Zipinfo to view the details of files within a compressed file

Archive (archive):

Tar: Archive tool, archive does not mean compression, can call compression function implementation

-C: Create an archive file

-F: Archived files for operations

-X: Unzip the archive

--xattrs: Preserves the file's attribute information when archiving

-T: Do not expand the archive to see directly what files are in the archive

-Z: Call the gzip compression command

-J: Call bzip2 compression command

-j: Calling the XZ command

-K: Do not replace existing files when extracting

-V: Show detailed steps

-C: Specify the directory to unzip

-u: Append newer files than archived copies

-U: Delete the file you want to overwrite before extracting it

cpio: archive command used earlier

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