command2Linux reference manual

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command2Linux bzip2command is .bz

bzip2file compression program.77/adopts a new compression algorithm, with better compression effects than traditional LZ78LZ2compression algorithm is better. If no parameters are added, bzip2After compressing the file, a .bz

compression file, and delete the original file.

bzip2 [-cdfhkLstvVz][--repetitive-best][--repetitive-fast][- Compression Level][File to be Compressed]

Parameters:

• -c or--stdout 　Send the result of compression and decompression to standard output.
• -d or--decompress 　Execute decompression.
• -f or--force 　bzip2By default, the existing file will not be overwritten during compression or decompression if the output file has the same name as the existing file. To overwrite, please use this parameter.
• -h or--help 　Display help.
• -k or--keep 　bzip2After compression or decompression, the original file will be deleted. To keep the original file, please use this parameter.
• -s or--small 　Reduce the amount of memory used by the program during execution.
• -t or--test 　Test .bz2Integrity of compressed files.
• -v or--verbose 　Display detailed information during compression or decompression.
• -z or--compress 　Force compression to be executed.
• -L,--license,
• -V or--version 　Display version information.
• --repetitive-best 　If there are repetitive data in the file, this parameter can be used to improve the compression effect.
• --repetitive-fast 　If there are repetitive data in the file, this parameter can be used to speed up the execution speed.
• -Compression Level 　Block size during compression.

Online Examples

Uncompress .bz2File

[[email protected] ~]# bzip2 -v temp.bz2 //Uncompress File and Display Detailed Processing Information 

Compress File

[[email protected] ~]# bzip2 -c a.c b.c c.c

Check File Integrity

[[email protected] ~]# bzip2 -t temp.bz2

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