Change maven local repo in one command - Ubuntu/Linux

This will be useful for the developers who works with multiple maven local repositories.

Requirement:  set M2_HOME environment variable, before you start. 

Configuration: 
Add following  bash function to .bashrc in your home directory. Change M2_LOCATION if you need.

	changeM2()
	{
	if [ -z $M2_HOME ]; then
	echo "Set M2_HOME first."
	else
	# NOTE !.
	# M2_LOCATION is the place where I put my all local repos. Change it, if you need.
	M2_LOCATION=$M2_HOME/repo
	echo "Your Local repository location is set to $M2_LOCATION"
	#Validate M2_LOCATION is exist
	if [ -d $M2_LOCATION ]; then
	CURRENT_M2=$(grep -i "<localRepository>" $M2_HOME/conf/settings.xml | head -1)
	echo "Current M2 local repository is set to $CURRENT_M2"
	echo "Directories in the $M2_LOCATION"
	ls $M2_LOCATION -D
	echo ""
	read -p "Enter m2 repo name: " NEW_M2_LOCATION;
	if [ -z $NEW_M2_LOCATION ]; then
	echo "Invalid input. No changes to maven settings."
	else
	sed -i "s:$CURRENT_M2:<localRepository>$M2_LOCATION/$NEW_M2_LOCATION</localRepository>:g" $M2_HOME/conf/settings.xml
	echo ""
	echo "localRepository is changed to $M2_LOCATION/$NEW_M2_LOCATION"
	echo "New $M2_HOME/conf/settings.xml:"
	grep -i "$M2_LOCATION/$NEW_M2_LOCATION" $M2_HOME/conf/settings.xml
	fi
	else
	echo "$M2_LOCATION does not exists. Create $M2_LOCATION first."
	fi
	fi
	}

view raw .bashrc hosted with ❤ by GitHub

Then reload the .bashrc using command,

$ source ~/.bashrc

How to use: 

Type changeM2 in the terminal and give the name of the m2 repo (folder) you wish to change.