创建目录

分号让两个命令一起显示且他们之间没有逻辑关系

[root@localhost ~]# ls /;ls
aaa  bin  boot  ccc  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
anaconda-ks.cfg  hwclock  install.log
[root@localhost ~]# ls /
aaa  bin  boot  ccc  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@localhost ~]# ls
anaconda-ks.cfg  hwclock  install.log

创建目录 /opt/a/b/c1 /opt/a/b2 /opt/a/b1/ /opt/a/b1/b /opt/a/b2/a /opt/a/b2/b

[root@localhost ~]# mkdir -pv /opt/a{/b/c1,/b1{/a,/b},/b2{/a,/b}}
mkdir: created directory ‘/opt/a/b/c1’
mkdir: created directory ‘/opt/a/b1/a’
mkdir: created directory ‘/opt/a/b1/b’
mkdir: created directory ‘/opt/a/b2/a’
mkdir: created directory ‘/opt/a/b2/b’

[root@localhost ~]# tree /opt
/opt
└── a
    ├── b
    │   └── c1
    ├── b1
    │   ├── a
    │   └── b
    └── b2
        ├── a
        └── b
2.相对路径下备份 
[root@localhost ~]# cp /etc/fstab{,.bnk}
mv 也一样
3.一起批量移动