linu中sed替換斜杠\

環境：centos7

1、需要替換文本中的'\N' 字符，原文如下table.csv

[root@tidb-22 dump]# cat table.csv 
\N,\N,\N,\N,\N,"5806669D77B257FDE0539D64400AF54D"

2、替換文本中的\N為“”

[root@tidb-22 dump]# sed -e "s/\\\N/\"\"/g" table.csv      #-e表示預覽 三個\表示一個斜杠
"","","","","","5806669D77B257FDE0539D64400AF54D"
[root@tidb-22 dump]# sed -i "s/\\\N/\"\"/g" table.csv      #替換文本
[root@tidb-22 dump]# cat table.csv                         #查看替換后的文本
"","","","","","5806669D77B257FDE0539D64400AF54D"