500.大文件压缩解压

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[root@dmdb:/soft/dm]# ls
Kylin-Server-10-SP2-aarch64-Release-Build09-20210524.iso
[root@dmdb:/soft/dm]# md5sum Kylin-Server-10-SP2-aarch64-Release-Build09-20210524.iso
8673465f8d95ebba5351ea497d885ad7  Kylin-Server-10-SP2-aarch64-Release-Build09-20210524.iso
[root@dmdb:/soft/dm]# split -b 500M Kylin-Server-10-SP2-aarch64-Release-Build09-20210524.iso part_
[root@dmdb:/soft/dm]# du -sh *
2.4G    Kylin-Server-10-SP2-aarch64-Release-Build09-20210524.iso
500M    part_aa
500M    part_ab
500M    part_ac
500M    part_ad
423M    part_ae
[root@dmdb:/soft/dm]#cat part_* > dmsystem.iso
0%