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Awk/Sed commands find and replace pattern

rated 0 times [ 0] [ 0] / answers: 1 / hits: 478 / 1 Year ago, sun, march 5, 2023, 8:18:35

I have a file with data like the following. xyz can be anything, so I want to replace it.

variable "azure_spoke_gateways" {

  default = {

    spoke1 = {

      name         = "xyz"

      size         = "max"

      vpc          = "azure_spoke1_vnet"

    },

  }

}



variable "google_spoke_gateways" {

  default = {

    spoke1 = {

      name         = "xyz"

      size         = "max"

      vpc          = "azure_spoke1_vnet"

    },

  }

}

I just want to replace value of variable azure_spoke_gateways's name. The desired output is:

  variable "azure_spoke_gateways" {

      default = {

        spoke1 = {

          name         = "MYSTRING"

          size         = "max"

          vpc          = "azure_spoke1_vnet"

        },

      }

    }

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ainubt

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answered 1 Year ago ligenvirt · Accepted Answer

Usually, you can parse line by line on simpler formats, as long as you keep track of the subsection.

awk '  

  match($0,/variable "([^"]+)" {/,m) {  

    v = m[1]  

  }  

  $1 ~ /name/{  

    if(v == "azure_spoke_gateways") {  

      gsub(/"[^"]+"$/, ""MYSTRING"", $0)  

    }  

  } 1' data

You could also make it as a script file.

#!/usr/bin/awk -f



match($0,/variable "([^"]+)" {/,m) {

    v = m[1]

}

v == "google_spoke_gateways" {

    if($1 == "name"){

        gsub(/"[^"]+"$/, ""MYSTRING"", $0)

    }

    if($1 == "size") {

        gsub(/"[^"]+"$/, ""min"", $0)

    }

    if($1 == "vpc") {

        gsub(/"[^"]+"$/, ""google_spoke1_vnet"", $0)

    }

} 1

And you run the script like this.

awk -f script.awk < data