Review and improvement of small white 7

Compress and decompress, archive

Compress command

Compress compression (early compression command)

Uncomprss Decompression

Compression ratio: (compressed file size before-compressed file size): File size before compression

gzip [option] fileName (. gz)

-D Decompression

-# (1-9) specifies the compression ratio, which defaults to 6.

Gunzip filename.gz

Zcat filename.gz to view the contents of a file without decompressing

bzip2 [option] fileName (. bz2)

-D Unzip the file

-# (1-9) specifies the compression ratio, which defaults to 6.

-K to retain the original file after compression

BUNZIP2 filename.bz2 Extract Files

Bzcat viewing the source document without decompressing

XZ [option] fileName (. gz)

-D Unzip the file

-# (1-9) specifies the compression ratio, which defaults to 6.

-K to retain the original file after compression

UNZX Decompression

Zxcat viewing the source document without decompressing

1, compression algorithm is different, compression ratio of the same

2. bZIP gzip can only compress files, cannot archive files

3. The three commands will delete the original file after the compression is complete, and the decompression is also

4, the so-called uncompressed view file is actually looking for a temporary directory decompression

Archive Command (archive does not mean compression)

Zip: Can be archived and can be compressed

Zip filename.zip file file1 file2 .... (The original file will not be deleted after compression)

Unzip decompression

Tar Archive tool

-C Create an archive file

-F Filename.tar Operation Archive (must follow the file name after-f)

-X Expand Document

-ZCF archive files and call the GZIP compression tool

-ZXF call gzip Unzip and expand archive | (Z can be omitted, will be identified from the suffix name)

-JCF archive file and call bZIP compression tool

-JXF Call bZIP Extract and expand archive

-JCF archive file and call the XZ compression tool

-JXF Call XZ Extract and expand archive

Cpio: Archive Tool

Review and improvement of small white 7