Linux压缩文件-高强度压缩

Posted 2021-02-16 wang_wei123

安装压缩文件
[[email protected] ~]# yum provides "*bunzip2"
[[email protected] ~]# yum install bzip2

[[email protected] ~]# du -sh 20190328_0003api.sql.tar.bz
1.6M 20190328_0003api.sql.tar.bz
[[email protected] ~]#
[[email protected] ~]# du -sh 20190328_0003api.sql.tar.bz
1.6M 20190328_0003api.sql.tar.bz
[[email protected] ~]# bunzip2 20190328_0003api.sql.tar.bz
[[email protected] ~]# ll
总用量 52300
-rw-r--r-- 1 root root 53555200 3月 28 11:18 20190328_0003api.sql.tar
[[email protected] ~]# du -sh 20190328_0003api.sql.tar
52M 20190328_0003api.sql.tar
[[email protected] ~]# tar -xf 20190328_0003api.sql.tar
[[email protected] ~]# ll
总用量 104596
-rw-r----- 1 root root 53547626 3月 28 11:13 20190328_0003api.sql
-rw-r--r-- 1 root root 53555200 3月 28 11:18 20190328_0003api.sql.tar
[[email protected] ~]# du -sh ./*
52M ./20190328_0003api.sql
52M ./20190328_0003api.sql.tar

压缩文件操作：
[[email protected] ~]# ll
总用量 52296
-rw-r----- 1 root root 53547626 3月 28 11:13 20190328_0003api.sql
[[email protected] ~]#

[[email protected] ~]# bzip2 20190328_0003api.sql
您在 /var/spool/mail/root 中有新邮件
[[email protected] ~]# ll
总用量 1632
-rw-r----- 1 root root 1668897 3月 28 11:13 20190328_0003api.sql.bz2
[[email protected] ~]# du -sh ./*
1.6M ./20190328_0003api.sql.bz2

将52M的文件压缩成1.6M，压缩程度非常高。

[[email protected] ~]# tar -zcvf 20190328_0003api.sql.tar.bz2 20190328_0003api.sql
20190328_0003api.sql
[[email protected] ~]# ll
总用量 54936
-rw-r----- 1 root root 53547626 3月 28 11:13 20190328_0003api.sql
-rw-r--r-- 1 root root 2702298 3月 28 15:01 20190328_0003api.sql.tar.bz2
[[email protected] ~]# du -sh
54M .
[[email protected] ~]# tar -zcvf 20190328_0003api.sql.tar.bz2 20190328_0003api.sql
20190328_0003api.sql
[[email protected] ~]# ll
总用量 54936
-rw-r----- 1 root root 53547626 3月 28 11:13 20190328_0003api.sql
-rw-r--r-- 1 root root 2702298 3月 28 15:01 20190328_0003api.sql.tar.bz2
[[email protected] ~]# du -sh ./*
52M ./20190328_0003api.sql
2.6M ./20190328_0003api.sql.tar.bz2