Question

我有以下输入

server01, 
server02, 
server03, 
server04, windows 2008 R2 USA
server05, Linux Centos Canada
server06, 
server07, 
server08, Linux RedHat UK
server09, 
server10, 
...

我需要命令只替换第2列中没有任何内容的行和text，以获得以下输出：

server01, Incomplete
server02, Incomplete
server03, Incomplete
server04, windows 2008 R2 USA
server05, Linux Centos Canada
server06, Incomplete
server07, Incomplete
server08, Linux RedHat UK
server09, Incomplete
server10, Incomplete
...

非常感谢你的帮助

Answer 1

您可以尝试使用此sed命令

sed 's/, $/&Incomplete/' FileName

server01之后没有空格，尝试*出现零次或多次

sed 's/, *$/&Incomplete/'

输出

server01, Incomplete
server02, Incomplete
server03, Incomplete
server04, windows 2008 R2 USA
server05, Linux Centos Canada
server06, Incomplete
server07, Incomplete
server08, Linux RedHat UK
server09, Incomplete
server10, Incomplete

Answer 2

尝试类似：

awk '{if (!$2) {print $1, "Incomplete"} else {print $1, $2}}' myfile.txt

输出：

server01, Incomplete
server02, Incomplete
server03, Incomplete
server04, windows 2008 R2 USA
server05, Linux Centos Canada
server06, Incomplete
server07, Incomplete
server08, Linux RedHat UK
server09, Incomplete
server10, Incomplete

Answer 3

使用bash：

while IFS=, read -r A B; do echo -n "$A,"; [[ $B == " " ]] && echo " Incomplete" || echo "$B"; done

输出：

server01, Incomplete
server02, Incomplete
server03, Incomplete
server04, windows 2008 R2 USA
server05, Linux Centos Canada
server06, Incomplete
server07, Incomplete
server08, Linux RedHat UK
server09, Incomplete
server10, Incomplete

Answer 4

这是awk

awk 'NF==1{$0=$0"incomplete"}1' file
server01, incomplete
server02, incomplete
server03, incomplete
server04, windows 2008 R2 USA
server05, Linux Centos Canada
server06, incomplete
server07, incomplete
server08, Linux RedHat UK
server09, incomplete
server10, incomplete

如果只有一个字段，请添加额外的文字。

以下是另一种变体：

awk '!$2{print $1,"Incomplete";next}1' file

Answer 5

这就是你需要的：

awk -F, '{print $0 ($2=="" ? "Incomplete" : "")}' file

所有其他当前发布的awk解决方案都将失败，给定一些特定值$ 1和/或$ 2（例如，如果$ 2的数值为零或$ 1包含空格或......）。

awk如何只在第2列空单元格中找到并替换为文本

5 个答案: