README.md

Count up a version which is read from a VERSION file. The VERSION is assumed to be in the format v1.2.3

• ./upcount-version.sh major increments the major version
• ./upcount-version.sh minor increments the minor version
• ./upcount-version.sh increments the patch version

upcount-version.sh

#!/bin/sh

if [ -f "VERSION" ]; then
	VERSION=$(cut -d'v' -f 2 <<< $(cat VERSION))
	MAJOR=$(cut -d'.' -f 1 <<< ${VERSION})
	MINOR=$(cut -d'.' -f 2 <<< ${VERSION})
	PATCH=$(cut -d'.' -f 3 <<< ${VERSION})
else
	MAJOR=0
	MINOR=0
	PATCH=0
fi

if [ "$1" == "major" ]; then
	MAJOR=$(expr ${MAJOR} + 1)
	MINOR=0
	PATCH=0
elif [ "$1" == "minor" ]; then
	MINOR=$(expr ${MINOR} + 1)
	PATCH=0
else
	PATCH=$(expr ${PATCH} + 1)
fi

echo v${MAJOR}.${MINOR}.${PATCH} > VERSION

cat VERSION