1,rmdir，一个很鸡肋的命令，只能删除空目录
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3
ghostwu@dev:~/linux/cp$ rmdir a
rmdir: failed to remove 'a': Directory not empty
ghostwu@dev:~/linux/cp$ mkdir b
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3 b
ghostwu@dev:~/linux/cp$ rmdir b
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3
２，mv: 移动文件或者重命名
把1.txt重命名为11.txt
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3
ghostwu@dev:~/linux/cp$ mv .txt .txt
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3
把11.txt移动到b目录
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3
ghostwu@dev:~/linux/cp$ mkdir b
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3 b
ghostwu@dev:~/linux/cp$ mv .txt b
ghostwu@dev:~/linux/cp$ ls
.txt a a2 a3 b
ghostwu@dev:~/linux/cp$ tree b
b
└── .txt
-f：如果目标文件存在，不会询问直接覆盖
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3 b
ghostwu@dev:~/linux/cp$ ls b
.txt
ghostwu@dev:~/linux/cp$ mv -f .txt b/.txt
ghostwu@dev:~/linux/cp$ ls
.txt a a2 a3 b
-i: 如果目标文件存在，询问是否覆盖
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3 b
ghostwu@dev:~/linux/cp$ ls b
.txt
ghostwu@dev:~/linux/cp$ mv -i .txt b/.txt
mv: overwrite 'b/11.txt'? n
ghostwu@dev:~/linux/cp$ ls
.txt .txt a a2 a3 b
ghostwu@dev:~/linux/cp$ mv -i .txt b/.txt
mv: overwrite 'b/11.txt'? y
ghostwu@dev:~/linux/cp$ ls
.txt a a2 a3 b
-n: 不覆盖已经存在的文件
ghostwu@dev:~/linux/cp$ ls
.txt a a2 a3 b
ghostwu@dev:~/linux/cp$ ls b
.txt
ghostwu@dev:~/linux/cp$ mv -n .txt b/.txt
ghostwu@dev:~/linux/cp$ ls
.txt a a2 a3 b
-u: 当文件不存在，或者源文件比目标文件新的时候，才移动
ghostwu@dev:~/linux/cp$ ls -l
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
drwxrwxr-x ghostwu ghostwu 5月 : a
drwxrwxr-x ghostwu ghostwu 5月 : a2
drwxrwxr-x ghostwu ghostwu 5月 : a3
drwxrwxr-x ghostwu ghostwu 5月 : b
ghostwu@dev:~/linux/cp$ ls -l b
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
ghostwu@dev:~/linux/cp$ mv -u .txt b/.txt
ghostwu@dev:~/linux/cp$ ls -l
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
drwxrwxr-x ghostwu ghostwu 5月 : a
drwxrwxr-x ghostwu ghostwu 5月 : a2
drwxrwxr-x ghostwu ghostwu 5月 : a3
drwxrwxr-x ghostwu ghostwu 5月 : b
ghostwu@dev:~/linux/cp$ ls b
.txt
ghostwu@dev:~/linux/cp$ ls -l b
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
ghostwu@dev:~/linux/cp$ touch .txt
ghostwu@dev:~/linux/cp$ ls -l .txt
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
ghostwu@dev:~/linux/cp$ mv -u .txt b/.txt
ghostwu@dev:~/linux/cp$ ls -l
total
drwxrwxr-x ghostwu ghostwu 5月 : a
drwxrwxr-x ghostwu ghostwu 5月 : a2
drwxrwxr-x ghostwu ghostwu 5月 : a3
drwxrwxr-x ghostwu ghostwu 5月 : b
ghostwu@dev:~/linux/cp$ ls -l b
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
ghostwu@dev:~/linux/cp$ ls
a a2 a3 b
ghostwu@dev:~/linux/cp$ touch a.txt
ghostwu@dev:~/linux/cp$ ls
a a2 a3 a.txt b
ghostwu@dev:~/linux/cp$ ls -l b
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
ghostwu@dev:~/linux/cp$ mv a.txt b
ghostwu@dev:~/linux/cp$ ls -l
total
drwxrwxr-x ghostwu ghostwu 5月 : a
drwxrwxr-x ghostwu ghostwu 5月 : a2
drwxrwxr-x ghostwu ghostwu 5月 : a3
drwxrwxr-x ghostwu ghostwu 5月 : b
ghostwu@dev:~/linux/cp$ ls -l b
total
-rw-rw-r-- ghostwu ghostwu 5月 : .txt
-rw-rw-r-- ghostwu ghostwu 5月 : a.txt
rm: 删除文件
-i: 带提示
-f:强制删除
-r:递归删除
ghostwu@dev:~/linux/cp$ ls
a a2 a3 b
ghostwu@dev:~/linux/cp$ touch {a..f}.txt
ghostwu@dev:~/linux/cp$ ls
a a2 a3 a.txt b b.txt c.txt d.txt e.txt f.txt
ghostwu@dev:~/linux/cp$ rm a.txt
ghostwu@dev:~/linux/cp$ ls
a a2 a3 b b.txt c.txt d.txt e.txt f.txt
ghostwu@dev:~/linux/cp$ rm -i b.txt
rm: remove regular empty file 'b.txt'? n
ghostwu@dev:~/linux/cp$ ls
a a2 a3 b b.txt c.txt d.txt e.txt f.txt
ghostwu@dev:~/linux/cp$ rm -i b.txt
rm: remove regular empty file 'b.txt'? y
ghostwu@dev:~/linux/cp$ ls
a a2 a3 b c.txt d.txt e.txt f.txt
ghostwu@dev:~/linux/cp$ rm -f c.txt
ghostwu@dev:~/linux/cp$ ls
a a2 a3 b d.txt e.txt f.txt
ghostwu@dev:~/linux/cp$ ls
a3 d.txt e.txt f.txt
ghostwu@dev:~/linux/cp$ tree a3
a3
├── b
│ ├── .txt
│ ├── .txt
│ ├── .txt
│ ├── .txt
│ └── .txt
├── c
│ ├── .txt
│ ├── .txt
│ ├── .txt
│ ├── .txt
│ └── .txt
└── d
├── .txt
├── .txt
├── .txt
├── .txt
└── .txt directories, files
ghostwu@dev:~/linux/cp$ rm -r a3
ghostwu@dev:~/linux/cp$ ls
d.txt e.txt f.txt
