如何用 sed 替换版本号？

Question

  <package id="Antlr3.Runtime" version="3.5.1" targetFramework="net471" />
  <package id="MathNet.Numerics" version="4.12.0" targetFramework="net471" />
  <package id="NCalcAsync" version="3.1.8" targetFramework="net471" />
  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net471" />
  <package id="OdicoGeometryOps" version="1.0.0-20221118-143402" targetFramework="net471" />
  <package id="System.ValueTuple" version="4.5.0" targetFramework="net471" />
  <package id="VSDaVinci" version="1.0.0-20221118-143815" targetFramework="net471" />

I have a package file like this and I would like to update my version for line #5 and line #7 using sed. Another thing worth mentioning is that the version number for line #5 and line #7 is not static so at any given point it may change. How can I do this?

Edit: My req may not be very clear so I'm adding a couple more points. All i want to do is to change the version number on line #5 and line #7. The version number that i will be changing to and the one im changing is dynamic and i will get it as an argument to a file which i will be using to update it.

Answer 1

#!/bin/bash
#file name
File=demo.txt

##get 2 arguments 
lb1=$1
lb2=$2

sed -i "/^[[:space:]]*[^#]*keyword/c replaceable line" $File
sed -i "/^[[:space:]]*[^#]*keyword/c replaceable line" $File

the above script searches for the keyword and replaces the entire line with the replaceable line Note: it also ignores commented entries in the text file