linux bzcat 命令
Linux bzcat命令用于不解压缩指定的.bz2文件，即可直接查看解压缩后的文件内容。
bzcat命令语法bashbzcat [选项] [文件名]常用选项：
-s：将输出结果以更加易读的格式显示。命令帮助：
root@meng:~# bzcat --help
bzip2, a block-sorting file compressor. Version 1.0.8, 13-Jul-2019.
usage: bzcat [flags and input files in any order]
-h --help print this message
-d --decompress force decompression
-z --compress force compression
-k --keep keep (don't delete) input files
-f --force overwrite existing output files
-t --test test compressed file integrity
-c --stdout output to standard out
-q --quiet suppress noncritical error messages
-v --verbose be verbose (a 2nd -v gives more)
-L --license display software version & license
-V --version display software version & license
-s --small use less memory (at most 2500k)
-1 .. -9 set block size to 100k .. 900k
--fast alias for -1
--best alias for -9
If invoked as `bzip2', default action is to compress.
as `bunzip2', default action is to decompress.
as `bzcat', default action is to decompress to stdout.
If no file names are given, bzip2 compresses or decompresses
from standard input to standard output. You can combine
short flags, so `-v -4' means the same as -v4 or -4v, &c.
命令案例：bzip2 -z meng.txt
查看：
bzcat meng.txt.bz2
