Change maven repository in one bash command - Linux.

.bashrc

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
}