linux - How to understand sed -n '/,/s/,/ /gp'

Question

I saw this writing in the book {code...} I can understand this writing sed 's/,/ /gp', but I can't understand the above.

阿神 · Answer

s命令前面是确定查找那些行。
问题中/,/是个正则表达式，表示只要该行中有逗号，那么就执行s命令。如果你写成1,2s means only executing the s command on the first and second lines;
s命令后面是命令内容： /将要被替换的内容/替换成的内容/，对应问题中 s/,/ /;

In summary, find the lines with commas and perform matching: if a comma is matched, replace the comma with a space. As for gp, I won’t explain too much, I believe you understand.

过去多啦不再A梦 · Answer

Match lines with , , and replace all , with spaces