linux-Compression and packaging

Compression, decompression, and archiving tools

File-roller

Compress/uncompress:. Z

Gzip/gunzip:. gz

BZIP2/BUNZIP2:. bz2

XZ/UNXZ:. XZ

Zip/unzip

Tar

Cpio

Compress/uncompress

compress [-DFVCVR] [-B maxbits] [file ...]

- D: decompression, equivalent to uncompress

C: results output to standard output , do not delete the original file

- V: Show Details

uncompress Unzip

Zcat file. Z >file

Gzip/gunzip

gzip [OPTION] ... FILE ...

- D: decompression, equivalent to Gunzip

C: outputs a compressed or decompressed result to a standard output

-# : 1-9 , specify the compression ratio, the larger the value, the greater the compression ratio

Zcat : View text file contents without explicit decompression

Instance:

GZIP-C Messages >messages.gz

Gzip-c-D messages.gz > messages

Zcat messages.gz > messages

Bzip2/bunzip2/bzcat

bzip2 [OPTION] ... FILE ...

-k:keep, keep the original file

- D : Unzip

-# : 1-9 , compression ratio, default is 9

Bzcat : View text file contents without explicit decompression

Xz/unxz/xzcat

XZ [OPTION] ... FILE ...

-k:keep, keep the original file

- D : Unzip

-# : 1-9 , compression ratio, default is 6

Xzcat: View text file contents without explicit decompression

Zip/unzip

Packaging compression

Zip-r/testdir/sysconfig/etc/sysconfig/

Unpacking and decompression

Unzip Sysconfig.zip

Cat/var/log/messages | Zip messages-

UNZIP-P Message > Message

Tar Tools

Tar ( Tape ARchive , the abbreviation for Tape archive)

tar [OPTION] ...

(1) Create an archive

Tar-cpvf/path/to/somefile.tar FILE ...

(2) append file to archive: Note: Append to compressed file is not supported

Tar-r-f/path/to/somefile.tar FILE ...

(3) View the list of files in the archive file

Tar-t-f/path/to/somefile.tar

(4) Expand Archive

Tar-x-f/path/to/somefile.tar

Tar-x-f/path/to/somefile.tar-c/path/

(5) combined with compression tool implementation: Archive and Compress

-z:gzip,-J:BZIP2,-J:XZ

- T option to specify the input file ,-X option specifies a list of files to exclude

Tar zcvf mybackup.tgz-t/root/includefilelist-x/root/excludefilelist

split the Big Tar files are multiple small files:

Split-b size-d Tar-file-name Prefix-name

Split-b 1m-d mybackup.tgz Mybackup-parts

Split-b 1M mybackup.tgz Mybackup-parts

Merge:

Cat mybackup-parts* > mybackup.tar.gz

Cpio

Function: Copy file from or to archive

Cpio The command is a redirected way to package a file for backup, restore the recovery tool, which can be decompressed to " . Cpio "or" . Tar "End of file

cpio [ options ] > file name or device name

cpio [ options ] < file name or device name

Options

- o Package A file copy into a file or export the file to a device

- I. Unpack the package files or restore the backups on the device to the system

- T Preview, view the contents of a file or output to a file on your device

- v displays the name of the file during the packaging process.

- D unpacking the build directory, Cpio when restoring, set up the directory automatically

- C a newer way to store

Example

will be etc Directory Backup:

Find/etc-print |cpio-ov > Etc.cpio

Content Preview

Cpio-tv < Etc.cpio

Unpacking files

Cpio-idv < Etc.cpio

Compression ratio sort

Z

Gz

bz2

Xz

it 4 tool can only be compressed for files, Zip and the Tar to pack it, not to pack it. WinRAR words Zip in the Windows can also be used

Tar-cpvf

- C Create

- P Save Property

- v look at the process

-F

linux-Compression and packaging