linu中sed替换斜杠\

环境：centos7

1、需要替换文本中的'\N' 字符，原文如下table.csv

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

2、替换文本中的\N为“”

[root@tidb-22 dump]# sed -e "s/\\\N/\"\"/g" table.csv      #-e表示预览 三个\表示一个斜杠
"","","","","","5806669D77B257FDE0539D64400AF54D"
[root@tidb-22 dump]# sed -i "s/\\\N/\"\"/g" table.csv      #替换文本
[root@tidb-22 dump]# cat table.csv                         #查看替换后的文本
"","","","","","5806669D77B257FDE0539D64400AF54D"