Change value of yaml file with shellskript-CodePudding

I am writing a script with which the user can, for example, change an IP in a yaml file by entering it via the keyboard. But I have problems with the sed command, can anybody help me with this. I have only found commands that replace a string with a string incorporated in the command sed.

Yaml-file

network: 
  address: [00.000.0.00]

Script

echo "Please enter the desired IP address:" 
read input
ip="$input"
sed??????????????????

CodePudding user response：

With yq (same as jq but meant for YAML):

yq '.network.address = "[1.1.1.1]"' file.yaml 
{
  "network": {
    "address": "[1.1.1.1]"
  }
}

This is the proper tool for this usage. Both python and go versions works here.

CodePudding user response：

If you are stuck with sed:

sed -E 's/(address: *)\[[^][] \]/\1[1.1.1.1]/' file.yaml

sed 's/\(address: *\)\[.*/\1[1.1.1.1]/' file.yaml

Output

network: 
  address: [1.1.1.1]

Add -i to edit in place