Linux bzip2 command details how to use Linux bzip2 command

Source: Internet
Author: User
Tags bz2 memory usage

Bzip2 adopts the new compression algorithm, which is better than the traditional LZ77/LZ78 compression algorithm. If no compression file is added, the compressed file .bz2 will be uploaded and the original file will be deleted.

Syntax

Bzip2 [-cdfhkLstvVz] [-- repetitive-best] [-- repetitive-fast] [-compression grade] [file to be compressed]

Parameters:

  • -C or -- stdout sends the compression and decompression results to the standard output.
  • -D or -- decompress.
  • -F or -- force bzip2 will not overwrite the existing file if the output file has the same name as the existing file during compression or decompression. To overwrite data, use this parameter.
  • -H or -- help displays help.
  • -K or -- keep bzip2 will delete the original file after compression or decompression. To retain the original file, use this parameter.
  • -S or -- small reduces the memory usage during program execution.
  • -T or -- test the integrity of the. Bz2 compressed file.
  • -V or -- verbose displays detailed information when compressing or extracting files.
  • -Z or -- compress enforces compression.
  • -L, -- license,
  • -V or -- version displays version information.
  • -- Repetitive-best: this parameter can be used to improve the compression effect if duplicate data appears in the file.
  • -- Repetitive-fast: this parameter can be used to speed up execution if duplicate data appears in the file.
  • -The block size when the compression level is compressed.

Instance

Decompress the. Bz2 file

Root@w3cschool.cc ~ # Bzip2-v temp.bz2 // The detailed processing information is displayed in the extracted file.

Compressed file

Root@w3cschool.cc ~ # Bzip2-c a. c B. c. c

Check File Integrity

Root@w3cschool.cc ~ # Bzip2-t temp.bz2

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