This script gets the version and build number and automatically updates, set tag and commit

bump-version.sh

# Find the current marketing version
OLD_VERSION=$(agvtool what-marketing-version -terse1)

# Get the current marketing version values
##replace . with space so can split into an array
VERSION_BITS=(${OLD_VERSION//./ })

##get tag number parts for version and build numbers
VNUM1=${VERSION_BITS[0]}
VNUM2=${VERSION_BITS[1]}
VNUM3=${VERSION_BITS[2]}

# Bump the current marketing version third value
### Increment version numer
VNUM3=$((VNUM3+1))

# bump version number
xcrun agvtool new-marketing-version $VNUM1.$VNUM2.$VNUM3

# bump the build number
agvtool next-version -all

# Get the new build number
NEW_BUILD_NUMBER=$(agvtool what-version -terse)

# Set version and build number as a tag

## create new tag
NEW_TAG="v$VNUM1.$VNUM2.$VNUM3($NEW_BUILD_NUMBER)"

# add and push that commit
git add .
git commit -m "Bump version and build number to $NEW_TAG" 
git push

echo "Updating version to $NEW_TAG"

#get current hash and see if it already has a tag
GIT_COMMIT=`git rev-parse HEAD`
NEEDS_TAG=`git describe --contains $GIT_COMMIT 2>/dev/null`

#only tag if no tag already
if [ -z "$NEEDS_TAG" ]; then
    git tag -a $NEW_TAG -m "$TAG_DESCRIPTION"
    echo "Tagged with $NEW_TAG"
    git push --tags
else
    echo "Already a tag on this commit"
fi