[SOLVED] Shell script - Bump version automatically git

Issue

I've the following command which I want to execute with one command via 'makefile' how can I do it ?

1. git tag -a v0.0.1 -m "new release"
2. git push origin v0.0.1

Now I've created something for start

git:
    git add .
    git commit -m "$m"
    git push origin master

Now I've two issue, how to resolve the version e.g. Here is v0.0.1 but for each new release I need to bump it like first is v0.0.1 and the next release should be v0.0.2, can it be done somehow automatically (maybe have some counter...)? if not maybe add it as parameter to one command

1. git tag -a v0.0.1 -m "new release"
2. git push origin v0.0.1

update

There is answer which looks good with the following

git describe --tags --abbrev=0 | awk -F. '{$NF+=1; OFS="."; print $0}'

but How should I combine it with ?

1. git tag -a v0.0.1 -m "new release"
2. git push origin v0.0.1

update 2

When I try the following as suggest in Kevin answer I got error:

.PHONY: git

VERSION=git describe --tags --abbrev=0 | awk -F. '{$NF+=1; OFS="."; print $0}'

git:
    git add .
    git commit -m "$m"
    git push origin master
    git tag -a $(VERSION) -m "new release"
    git push origin $(VERSION)

The error is: fatal: tag 'ERSION' already exists it seems that the bump of not working and it somehow remove the v from version

I did another check, remove the repo and start it from scratch manually for the first release 0.0.1 now I did change in one file and run the script , the version should now be 0.0.2 if it success, but no Im getting error fatal: tag 'v0.0.1' already exists which explain that the bump is not working, any idea why ?

I guess it's related to this code `'{$NF+=1; OFS="."; print $0}'

Solution

Using the last pushed tag you could automatically increment your version number:

git describe --tags --abbrev=0 | awk -F. '{OFS="."; $NF+=1; print $0}'

Keep in mind that you store it in a variable and use it to tag and push:

VERSION=`git describe --tags --abbrev=0 | awk -F. '{OFS="."; $NF+=1; print $0}'`
git tag -a $VERSION -m "new release"
git push origin $VERSION

---

Explanation:

git describe - Show the most recent tag that is reachable from a commit

--tags - Enables matching a lightweight (non-annotated) tag.

--abbrev=0 - Will suppress long format, only showing the closest tag.

---

awk -F. - Process pattern using "." as a delimiter

'{OFS="."; $NF+=1; print $0}' - only increment last number and join with "."

---

makefile:

.PHONY: git

git:
    $(eval VERSION=$(shell git describe --tags --abbrev=0 | awk -F. '{OFS="."; $$NF+=1; print $0}'))
    git add .
    git commit -m "$m"
    git push origin master
    git tag -a $(VERSION) -m "new release"
    git push origin $(VERSION)

Answered By - Kevin Sandow