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如何验证主机名和 IP 列表

tag-icon • tag-icon linux shell-script awk sed
如何验证主机名和 IP 列表

我们需要验证列表文件

master01.sys65.com 23.154.3.61
master02.sys65.com 23.154.3.62
master03.sys65.com 23.154.3.63
worker01.sys65.com 23.154.3.64
worker02.sys65.com 23.154.3.65
worker03.sys65.com 23.154.3.66
kafka01.sys65.com  23.154.3.85
kafka02.sys65.com  23.154.3.86
kafka03.sys65.com  23.154.3.87

规则是：

每个第一个字段中的主机名必须位于第二个字段中的 IP 地址

错误列表的示例

master01.sys65.com 23.154.3.61
master02.sys65.com 23.154.3.62
master03.sys65.com 23.154.3.63
worker01.sys65.com 23.154.3.64
worker02.sys65.com 23.154.3.65
worker03.sys65.com 
kafka01.sys65.com  23.154.3.85
kafka02.sys65.com  23.154.3.86
kafka03.sys65.com  23.154.3.87


or

master01.sys65.com 23.154.3.61
master02.sys65.com 23.154.3.62
master03.sys65.com 23.154.3.63
worker01.sys65.com 23.154.3.64
worker02.sys65.com 23.154.3.65
23.154.3.66
kafka01.sys65.com  23.154.3.85
kafka02.sys65.com  23.154.3.86
kafka03.sys65.com  23.154.3.87

答案1

Awk解决方案：

awk 'NF == 1{ f=1; exit }END{ print "Hostname list is "(f? "not ":"")"valid" }' file

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