sed命令只为unix中的最后一行添加文本

Question

我想要sed命令,它会将逗号添加到最后一行,例如我有包含的文本文件

"872709"
"872700"
"145"
"872808B"
"8729029921"
"879B"
"87290"
"AirHo9"
"Ait22"
"DVDSept22"
"Gr929"

想在最后一行添加逗号

"872709"
"872700"
"145"
"872808B"
"8729029921"
"879B"
"87290"
"AirHo9"
"Ait22"
"DVDSept22"
"Gr929",

Answer 1

你可以使用sed:

sed '$s/$/,/' file
"872709"
"872700"
"145"
"872808B"
"8729029921"
"879B"
"87290"
"AirHo9"
"Ait22"
"DVDSept22"
"Gr929",

要使其保存更改内联使用:

sed -i.bak '$s/$/,/' file