[root@hf-01 d6z]# xz 1.txt
[root@hf-01 d6z]# ls
1.txt.xz 4.txt 5.txt
[root@hf-01 d6z]# du -sh 1.txt.xz
60K 1.txt.xz
[root@hf-01 d6z]# xz -d 1.txt.xz
[root@hf-01 d6z]# ls
1.txt 4.txt 5.txt
[root@hf-01 d6z]# du -sh 1.txt
1.5M 1.txt
[root@hf-01 d6z]# unxz 1.txt.xz
[root@hf-01 d6z]# ls
1.txt 4.txt 5.txt
[root@hf-01 d6z]# xz -c 1.txt > /tmp/ha.txt.xz
[root@hf-01 d6z]# du -sh /tmp/ha.txt.xz
60K /tmp/ha.txt.xz
[root@hf-01 d6z]# unxz -c /tmp/ha.txt.xz > ./8.txt
[root@hf-01 d6z]# ls
1.txt 4.txt 5.txt 8.txt
[root@hf-01 d6z]# du -sh 8.txt
1.5M 8.txt