\n :換行

[root@k8s-master01 ~]# echo -e "a\nb">>/root/ceshi.txt
[root@k8s-master01 ~]# cat ceshi.txt 

a
b

\t :製表符

[root@k8s-master01 ~]# echo -e "a\tb">>/root/ceshi.txt    #a與b中間的空位就是水平製表（製表符）。相當於敲了個tab鍵
[root@k8s-master01 ~]# cat ceshi.txt 

a
b
a    b
[root@k8s-master01 ~]# echo -e "c\tb">>/root/ceshi.txt
[root@k8s
 
-master01 ~]# cat ceshi.txt 

a
b
a    b
c    b

\r ：相當於回車鍵

[root@k8s-master01 ~]# echo -e "h\rset">>/root/ceshi.txt 
[root@k8s-master01 ~]# cat ceshi.txt 

a
b
a    b
c    b
h
 m
liutao
      date
liadast
heast
set
46789
set
[root@k8s-master01 ~]# echo -e "\r46789">>/root/ceshi.txt
[root@k8s-master01 ~]# cat
 
 ceshi.txt 

a
b
a    b
c    b
h
 m
liutao
      date
liadast
heast
set
46789
set
46789

\v :垂直製表符

[root@k8s-master01 ~]# echo -e "liutao\vdate">>/root/ceshi.txt
[root@k8s-master01 ~]# cat ceshi.txt 

a
b
a    b
c    b
h
 m
liutao
      date

\b：相當於backspace鍵（後退一格）

[root@k8s-master01 ~]# echo -e "
 
liao\bdast">>/root/ceshi.txt
[root@k8s-master01 ~]# cat ceshi.txt 

a
b
a    b
c    b
h
 m
liutao
      date
liadast