Shell command to update pom file from a variable

Question

Previously I used below command to take the version in pom.xml and increment it from one. Before increment snapshot version is, 0.0.1

#!/bin/bas         


        

Answer 1

I can use maven plugin to do above increment. But the thing is my mentor has been instructed me to get it by using shell commands for practice shell scripting. I highly appreciate your support. Somehow I solved my question using below commands.

#!/bin/bash

cd Project/

version=$(grep -ri "" pom.xml |head -n 1 | sed -e 's/^[ \t]*\ 
([^<]*\)<.*$/\1/')

major=$(echo $version | cut -c1)
var2=$(echo $version | cut -c2)
miner=$(echo $version | cut -c3)
var4=$(echo $version | cut -c4)
bug=$(echo $version | cut -c5)
bug=$((bug+1))
str="-SNAPSHOT"
incrementVer=$major$var2$miner$var4$bug$str
echo $incrementVer

pomChange=$(grep -ri "" pom.xml | head -n 1 | sed -i "s/\(\)[^<]*\ 
(<\/version>\)/\1$incrementVer\2/" pom.xml)
echo $pomChange

Output looks like,

[INFO] ------------------------------------------------------------------- 
[INFO] BUILD SUCCESS
[INFO] --------------------------------------------------------------------- 
[INFO] Total time: 4.087s
[INFO] Finished at: Wed Oct 31 00:25:40 IST 2018
[INFO] Final Memory: 6M/17M
[INFO] --------------------------------------------------------------------
0.0.2-SNAPSHOT
Finished: SUCCESS