进入pod操作，敲错字母，回退问题

问题非常简单，但是确很实用

[root@k3 ~]# kubectl exec -ti po-node-0 -- /bin/sh
# ping www.baidu.com
PING www.wshifen.com (103.235.46.39): 56 data bytes
64 bytes from 103.235.46.39: icmp_seq=0 ttl=44 time=214.433 ms
^C--- www.wshifen.com ping statistics ---
2 packets transmitted, 1 packets received, 50% packet loss
round-trip min/avg/max/stddev = 21.43/214.433/214.433/0.000 ms
# ps ^H^H^H　　
//当你敲错时，退格键键就会出现^H，怎么去掉呢？，你只要按住ctrl键，同时按backspace 退格键即可．