Question

我要在 {和} 中打印行，并分配主机组中的“芒果”

   object Host "os.google.com" {
    import "windows"
    address = "linux.google.com"
    groups = ["linux"]
    }

    object Host "mango.google.com" {
    import "windows"
    address = "mango.google.com"
    groups = ["linux"]

    assign where "mango" in Hostgroups
    }

所需的输出：

    object Host "mango.google.com" {
    import "windows"
    address = "mango.google.com"
    groups = ["linux"]

    assign where "mango" in Hostgroups
    }

Answer 1

尝试使用此awk脚本

script.awk

/{/,/}/ { #define record range from { to }
    if ($0 ~ "{") rec = $0; # if record opening reset rec variable with current line
    else rec = rec "\n" $0; # else accumulate the current line in rec
    if ($0 ~ /assign where "mango" in Hostgroups/) { # if found exit pattern in current line
        print rec; # print the rec
        exit;      # terminate
    }
}

执行：

awk -f script.awk input.txt

输出：

object Host "mango.google.com" {
import "windows"
address = "mango.google.com"
groups = ["linux"]

assign where "mango" in Hostgroups

Answer 2

这可能对您有用（GNU sed）：

sed -n '/{/h;//!H;/}/{g;/assign where "mango" in Hostgroups/p}' file

使用-n选项关闭seds自动打印，并在花括号之间的保留空间中收集线条。在右花括号后，将其替换为容纳空间的内容，如果与assign where "mango" in Hostgroup匹配，则打印它。

Answer 3

假设}不在您输入的任何其他上下文中出现：

$ awk -v RS='}' '
    /assign where "mango" in Hostgroups/ {
        sub(/^[[:space:]]+\n/,"")
        print $0 RS
    }
' file
    object Host "mango.google.com" {
    import "windows"
    address = "mango.google.com"
    groups = ["linux"]

    assign where "mango" in Hostgroups
    }

如何从配置文件中匹配大括号{}中的字符串和打印行

3 个答案: