Count the number of commits on a Git branch

user_1135138 0
Viewed 138971

I found this answer already: Number of commits on branch in git but that assumes that the branch was created from master.

How can I count the number of commits along a branch without relying on that assumption?

In SVN this is trivial, but for some reason is really difficult to figure out in git.

git
12 Answers

I like doing git shortlog -s -n --all. Gives you a "leaderboard" style list of names and number of commits.

user_5914870

If you are using a UNIX system, you could do

git log|grep "Author"|wc -l
user_137906190

Well, the selected answer doesn't work if you forked your branch out of unspecific branch (i.e., not master or develop).

Here I offer a another way I am using in my pre-push git hooks.

# Run production build before push
echo "[INFO] run .git/hooks/pre-push"

echo "[INFO] Check if only one commit"

# file .git/hooks/pre-push
currentBranch=$(git symbolic-ref HEAD | sed -e 's,.*/\(.*\),\1,')

gitLog=$(git log --graph --abbrev-commit --decorate  --first-parent HEAD)

commitCountOfCurrentBranch=0
startCountCommit=""
baseBranch=""

while read -r line; do

    # if git log line started with something like "* commit aaface7 (origin/BRANCH_NAME)" or "commit ae4f131 (HEAD -> BRANCH_NAME)"
    # that means it's on our branch BRANCH_NAME

    matchedCommitSubstring="$( [[ $line =~ \*[[:space:]]commit[[:space:]].*\((.*)\) ]] && echo ${BASH_REMATCH[1]} )"

    if [[ ! -z ${matchedCommitSubstring} ]];then

      if [[  $line =~ $currentBranch ]];then
        startCountCommit="true"
      else
        startCountCommit=""

        if [[ -z ${baseBranch} ]];then
          baseBranch=$( [[ ${matchedCommitSubstring} =~ (.*)\, ]] && echo ${BASH_REMATCH[1]} || echo ${matchedCommitSubstring} )

        fi

      fi

    fi


    if [[ ! -z ${startCountCommit} && $line =~ ^\*[[:space:]]commit[[:space:]] ]];then
      ((commitCountOfCurrentBranch++))
    fi


done <<< "$gitLog"

if [[ -z ${baseBranch} ]];then

  baseBranch="origin/master"

else

  baseBranch=$( [[ ${baseBranch} =~ ^(.*)\, ]] && echo ${BASH_REMATCH[1]} || echo ${baseBranch} )

fi


echo "[INFO] Current commit count of the branch ${currentBranch}:  ${commitCountOfCurrentBranch}"

if [[ ${commitCountOfCurrentBranch} -gt 1 ]];then
  echo "[ERROR] Only a commit per branch is allowed. Try run 'git rebase -i ${baseBranch}'"
  exit 1
fi

For more analysis, please visit my blog

user_9319080

As the OP references Number of commits on branch in git I want to add that the given answers there also work with any other branch, at least since git version 2.17.1 (and seemingly more reliably than the answer by Peter van der Does):

working correctly:

git checkout current-development-branch
git rev-list --no-merges --count master..
62
git checkout -b testbranch_2
git rev-list --no-merges --count current-development-branch..
0

The last command gives zero commits as expected since I just created the branch. The command before gives me the real number of commits on my development-branch minus the merge-commit(s)

not working correctly:

git checkout current-development-branch
git rev-list --no-merges --count HEAD
361
git checkout -b testbranch_1
git rev-list --no-merges --count HEAD
361

In both cases I get the number of all commits in the development branch and master from which the branches (indirectly) descend.

user_100585330

You can use this command which uses awk on git bash/unix to get the number of commits.

    git shortlog -s -n | awk '/Author/ { print $1 }'
user_67239470
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