How to count total lines changed by a specific author in a Git repository

Question

Is there a command I can invoke which will count the lines changed by a specific author in a Git repository  I know that there must be ways to count the number of commits as Github does this for their Impact graph

User · Answer

Save your logs into file using   git log --author   lt authorname gt   --oneline --shortstat  gt  logs txt   For Python lovers     with open r   logs txt    r   encoding  utf8   as f      files   insertions   deletions   0     for line in f          if   changed  in line              line   line strip               spl   line split                   if len spl   gt  0                  files    int spl 0  split      0               if len spl   gt  1                  insertions    int spl 1  split      0               if len spl   gt  2                  deletions    int spl 2  split      0        print str files  ljust 10      files changed       print str insertions  ljust 10      insertions       print str deletions  ljust 10      deletions     Your outputs would be like   225        files changed 6751       insertions 1379       deletions

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The Answer from AaronM using the shell one-liner is good  but actually  there is yet another bug  where spaces will corrupt the user names if there are different amounts of white spaces between the user name and the date  The corrupted user names will give multiple rows for user counts and you have to sum them up yourself   This small change fixed the issue for me   git ls-files -z   xargs -0n1 git blame -w --show-email   perl -n -e               s   d  4    print  1   n     sort -f   uniq -c   sort -n   Notice the   after  s which will consume all whitespaces from the name to the date   Actually adding this answer as much for my own rememberance as for helping anyone else  since this is at least the second time I google the subject      Edit 2019-01-23 Added --show-email to git blame -w to aggregate on email instead  since some people use different Name formats on different computers  and sometimes two people with the same name are working in the same git

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After looking at Alex s and Gerty3000 s answer  I have tried to shorten the one-liner   Basically  using git log numstat and not keeping track of the number of files changed   Git version 2 1 0 on Mac OSX   git log --format   aN    sort -u   while read name  do echo -en   name t   git log --author   name  --pretty tformat  --numstat   awk    add     1  subs     2  loc     1 -  2   END   printf  added lines   s  removed lines   s  total lines   s n   add  subs  loc    -  done   Example   Jared Burrows   added lines  6826  removed lines  2825  total lines  4001

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Here s a quick ruby script that corrals up the impact per user against a given log query   For example  for rubinius   Brian Ford  4410668 Evan Phoenix  1906343 Ryan Davis  855674 Shane Becker  242904 Alexander Kellett  167600 Eric Hodel  132986 Dirkjan Bussink  113756       the script      usr bin env ruby  impact   Hash new 0   IO popen  git log --pretty format    an   --shortstat   ARGV join         do  f    prev line        while line   f gets     changes      d   insertions    d   deletions  match line       if changes       impact prev line     changes 1  to i   changes 2  to i     end      prev line   line   Names are on a line of their own  just before the stats   end end  impact sort by    a i  -i   each do  author  impact    puts    author strip     impact   end

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In addition to Charles Bailey s answer  you might want to add the -C parameter to the commands  Otherwise file renames count as lots of additions and removals  as many as the file has lines   even if the file content was not modified   To illustrate  here is a commit with lots of files being moved around from one of my projects  when using the git log --oneline --shortstat command   9052459 Reorganized project structure  43 files changed  1049 insertions     1000 deletions -    And here the same commit using the git log --oneline --shortstat -C command which detects file copies and renames   9052459 Reorganized project structure  27 files changed  134 insertions     85 deletions -    In my opinion the latter gives a more realistic view of how much impact a person has had on the project  because renaming a file is a much smaller operation than writing the file from scratch

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You want Git blame   There s a --show-stats option to print some  well  stats

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I found the following to be useful to see who had the most lines that were currently in the code base   git ls-files -z   xargs -0n1 git blame -w   ruby -n -e                    s  d  4    puts  1 strip    sort -f   uniq -c   sort -n   The other answers have mostly focused on lines changed in commits  but if commits don t survive and are overwritten  they may just have been churn   The above incantation also gets you all committers sorted by lines instead of just one at a time   You can add some options to git blame  -C -M  to get some better numbers that take file movement and line movement between files into account  but the command might run a lot longer if you do   Also  if you re looking for lines changed in all commits for all committers  the follow little script is helpful   http   git-wt-commit rubyforge org  git-rank-contributors

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I wrote this Perl script to accomplish that task      usr bin env perl  use strict  use warnings     save the args to pass to the git log command my  ARGS   join       ARGV     get the repo slug my  NAME    get repo slug      get list of authors my  authors    get authors    my   projectFiles   projectInsertions   projectDeletions     0 0 0    for each author foreach my  author   authors      my  command   qq git log  ARGS --author   author  --oneline --shortstat --no-merges     my   files   insertions   deletions     0 0 0     my  lines     command     foreach my  line   lines        if   line    m   s  d   s w  s w   s  d   s w        -     s  d   s w        -       s  d   s w  s w   s  d   s w         -                my  lineFiles    1    1    4        my  lineInsertions    defined  6  amp  amp   6 eq         5    defined  2     2   0        my  lineDeletions    defined  6  amp  amp   6 eq  -      5    defined  3     3   0         files     lineFiles         insertions     lineInsertions         deletions     lineDeletions         projectFiles     lineFiles         projectInsertions     lineInsertions         projectDeletions     lineDeletions              if   files     insertions     deletions        printf          s  s  s   s - s  s n          NAME         author         files         insertions         deletions         insertions -  deletions               printf      s  s  s   s - s  s n      NAME     PROJECT TOTAL      projectFiles     projectInsertions     projectDeletions     projectInsertions -  projectDeletions     exit 0    get the remote origin url joins that last two pieces  project and repo folder   and removes any  git from the results   sub  get repo slug     my  get remote url    git config --get remote origin url     my  remote url     get remote url     chomp  remote url     my  parts   split       remote url      my  slug   join  -    parts -2  -1       slug    s   git       return  slug     sub  get authors     my  git authors    git shortlog -s   cut -c8-     my  authors     git authors     chomp  authors     return  authors      I named it git-line-changes-by-author and put into  usr local bin  Because it is saved in my path  I can issue the command git line-changes-by-author --before 2018-12-31 --after 2020-01-01 to get the report for the 2019 year  As an example  And if I were to misspell the name git will suggest the proper spelling    You may want to adjust the  get repo slug sub to only include the last portion of the remote origin url as my repos are saved as project repo and your might not be

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I provided a modification of a short answer above  but it wasnt sufficient for my needs   I needed to be able to categorize both committed lines and lines in the final code   I also wanted a break down by file   This code does not recurse  it will only return the results for a single directory  but it is a good start if someone wanted to go further   Copy and paste into a file and make executable or run it with Perl      usr bin perl  use strict  use warnings  use Data  Dumper   my  dir   shift   die  Please provide a directory name to check n      unless  dir   chdir  dir     or die  Failed to enter the specified directory   dir      n    if     open GIT LS  -    git ls-files           die  Failed to process  git ls-files      n     my  stats  while  my  file    lt GIT LS gt         chomp  file      if     open GIT LOG  -    git log --numstat  file               die  Failed to process  git log --numstat  file      n             my  author      while  my  log line    lt GIT LOG gt             if    log line    m  Author  s     lt      s  lt     gt     gt                    author   lc  1                     elsif    log line    m    d   s   d   s                       my  added    1              my  removed    2              my  file    3               stats total  by author   author  added             added               stats total  by author   author  removed           removed               stats total  by author  total  added               added               stats total  by author  total  removed             removed                stats total  by file   file   author  added        added               stats total  by file   file   author  removed      removed               stats total  by file   file  total  added          added               stats total  by file   file  total  removed        removed                      close GIT LOG       if     open GIT BLAME  -    git blame -w  file               die  Failed to process  git blame -w  file      n             while  my  log line    lt GIT BLAME gt             if    log line    m         s  d 4                   my  author    1               stats final  by author   author                       stats final  by file   file   author                   stats final  by author  total                         stats final  by file   file  total                    stats final  by file   file  total                           close GIT BLAME    close GIT LS   print  Total lines committed by author by file n   printf   25s  25s  8s  8s  9s n   file   author   added   removed   pct add   foreach my  file  sort keys    stats total  by file          printf   25s  4 0f   n   file              100  stats total  by file   file  total  added   stats total  by author  total  added       foreach my  author  sort keys    stats total  by file   file              next if  author eq  total           if    stats total  by file   file  total  added                  printf   25s  25s  8d  8d  8 0f   n       author    stats total  by file   file   author   qw added removed                100  stats total  by file   file   author  added   stats total  by file   file  total  added             else               printf   25s  25s  8d  8d n       author    stats total  by file   file   author   qw added removed                       print   n    print  Total lines in the final project by author by file n   printf   25s  25s  8s  9s  9s n   file   author   final   percent      of all   foreach my  file  sort keys    stats final  by file          printf   25s  4 0f   n   file              100  stats final  by file   file  total   stats final  by author  total       foreach my  author  sort keys    stats final  by file   file              next if  author eq  total           printf   25s  25s  8d  8 0f    8 0f   n       author  stats final  by file   file   author               100  stats final  by file   file   author   stats final  by file   file  total               100  stats final  by file   file   author   stats final  by author  total                    print   n     print  Total lines committed by author n   printf   25s  8s  8s  9s n   author   added   removed   pct add   foreach my  author  sort keys    stats total  by author          next if  author eq  total       printf   25s  8d  8d  8 0f   n   author    stats total  by author   author   qw added removed            100  stats total  by author   author  added   stats total  by author  total  added      print   n     print  Total lines in the final project by author n   printf   25s  8s  9s n   author   final   percent   foreach my  author  sort keys    stats final  by author          printf   25s  8d  8 0f   n   author  stats final  by author   author           100  stats final  by author   author   stats final  by author  total

User · Answer

The output of the following command should be reasonably easy to send to script to add up the totals   git log --author   lt authorname gt   --oneline --shortstat   This gives stats for all commits on the current HEAD  If you want to add up stats in other branches you will have to supply them as arguments to git log   For passing to a script  removing even the  oneline  format can be done with an empty log format  and as commented by Jakub Narebski  --numstat is another alternative  It generates per-file rather than per-line statistics but is even easier to parse   git log --author   lt authorname gt   --pretty tformat  --numstat

User · Answer

Here is a great repo that makes your life easier  git-quick-stats  On a mac with brew installed  brew install git-quick-stats  Run  git-quick-stats  Just choose which option you want from this list by typing in the number listed and hitting enter    Generate      1  Contribution stats  by author      2  Contribution stats  by author  on a specific branch     3  Git changelogs  last 10 days      4  Git changelogs by author     5  My daily status     6  Save git log output in JSON format   List      7  Branch tree view  last 10      8  All branches  sorted by most recent commit      9  All contributors  sorted by name     10  Git commits per author    11  Git commits per date    12  Git commits per month    13  Git commits per weekday    14  Git commits per hour    15  Git commits by author per hour   Suggest     16  Code reviewers  based on git history

User · Answer

git-fame https   github com oleander git-fame-rb This is a nice tool to get the count for all authors at once  including commit and modified files count  sudo apt-get install ruby-dev sudo gem install git fame cd  path to gitdir  amp  amp  git fame  There is also Python version at https   github com casperdcl git-fame  mentioned by  fracz   sudo apt-get install python-pip python-dev build-essential  pip install --user git-fame cd  path to gitdir  amp  amp  git fame  Sample output  Total number of files  2 053 Total number of lines  63 132 Total number of commits  4 330   ------------------------ -------- --------- ------- --------------------    name                     loc      commits   files   percent               ------------------------ -------- --------- ------- --------------------    Johan S  rensen           22 272   1 814     414     35 3   41 9   20 2     Marius Mathiesen         10 387   502       229     16 5   11 6   11 2     Jesper Josefsson         9 689    519       191     15 3   12 0   9 3      Ole Martin Kristiansen   6 632    24        60      10 5   0 6   2 9       Linus Oleander           5 769    705       277     9 1   16 3   13 5      Fabio Akita              2 122    24        60      3 4   0 6   2 9        August Lilleaas          1 572    123       63      2 5   2 8   3 1        David A  Cuadrado        731      111       35      1 2   2 6   1 7        Jonas   ngeslev            705      148       51      1 1   3 4   2 5        Diego Algorta            650      6         5       1 0   0 1   0 2        Arash Rouhani            629      95        31      1 0   2 2   1 5        Sofia Larsson            595      70        77      0 9   1 6   3 8        Tor Arne Vestb            527      51        97      0 8   1 2   4 7        spontus                  339      18        42      0 5   0 4   2 0        Pontus                   225      49        34      0 4   1 1   1 7       ------------------------ -------- --------- ------- --------------------   But be warned  as mentioned by Jared in the comment  doing it on a very large repository will take hours  Not sure if that could be improved though  considering that it must process so much Git data

User · Answer

Here s a short one-liner that produces stats for all authors  It s much faster than Dan s solution above at https   stackoverflow com a 20414465 1102119  mine has time complexity O N  instead of O NM  where N is the number of commits  and M the number of authors    git log --no-merges --pretty format  an --numstat   awk       amp  amp   author   author    0  next   author   ins author      1  del author      2          author       next   END   for  a in ins    printf   10d  10d  10d  s n   ins a  - del a   ins a   del a   a        sort -rn

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This gives some statistics about the author  modify as required   Using Gawk   git log --author   Your Name Here   --pretty tformat  --numstat     gawk    add     1  subs     2  loc     1 -  2   END   printf  added lines   s removed lines   s total lines   s n   add  subs  loc    -   Using Awk on Mac OSX   git log --author   Your Name Here   --pretty tformat  --numstat   awk    add     1  subs     2  loc     1 -  2   END   printf  added lines   s  removed lines   s  total lines   s n   add  subs  loc    -   EDIT  2017   There is a new package on github that looks slick and uses bash as dependencies  tested on linux   It s more suitable for direct usage rather than scripts   It s git-quick-stats  github link    Copy git-quick-stats to a folder and add the folder to path   mkdir   source cd   source git clone git github com arzzen git-quick-stats git mkdir   bin ln -s   source git-quick-stats git-quick-stats   bin git-quick-stats chmod  x   bin git-quick-stats export PATH   PATH    bin   Usage   git-quick-stats

User · Answer

In case anyone wants to see the stats for every user in their codebase  a couple of my coworkers recently came up with this horrific one-liner   git log --shortstat --pretty   cE    sed  s            1     grep -v        awk  BEGIN   line               if  line         match line   0    line    0     line           print line        0  line        sort   sed -E  s      s  files  changed    s   0-9      0-9   deletion   1 0 insertions        2  s                 0 deletions  -    s insertions            s  deletions   -        awk  BEGIN  name     files 0  insertions 0  deletions 0    if   1    name  amp  amp  name          print name      files   files changed    insertions   insertions       deletions   deletions -     insertions-deletions   net   files 0  insertions 0  deletions 0  name  1    name  1  files   2  insertions   3  deletions   4  END  print name      files   files changed    insertions   insertions       deletions   deletions -     insertions-deletions   net        Takes a few minutes to crunch through our repo  which has around 10-15k commits

User · Answer

This script here will do it  Put it into authorship sh  chmod  x it  and you re all set      bin sh declare -A map while read line  do     if grep    a-zA-Z    lt  lt  lt    line   gt   dev null  then         current   line          if   -z    map  current       then              map  current  0         fi     elif grep    0-9    lt  lt  lt   line   gt  dev null  then         for i in   cut -f 1 2  lt  lt  lt    line    do             map  current     map  current     i           done     fi done  lt  lt  lt     git log --numstat --pretty   aN     for i in     map       do     echo -e   i   map  i    done   sort -nr -t     -k 2   column -t -s

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The question asked for information on a specific author  but many of the answers were solutions that returned ranked lists of authors based on their lines of code changed  This was what I was looking for  but the existing solutions were not quite perfect  In the interest of people that may find this question via Google  I ve made some improvements on them and made them into a shell script  which I display below  There are no dependencies on either Perl or Ruby  Furthermore  whitespace  renames  and line movements are taken into account in the line change count  Just put this into a file and pass your Git repository as the first parameter     bin bash git --git-dir  quot  1  git quot  log  gt   dev null 2 gt   dev null if      -eq 128   then     echo  quot Not a git repository  quot      exit 128 else     echo -e  quot Lines    Name nChanged  quot      git --work-tree  quot  1 quot  --git-dir  quot  1  git quot  ls-files -z        xargs -0n1 git --work-tree  quot  1 quot  --git-dir  quot  1  git quot  blame -C -M  -w        cut -d    -f2        cut -d2 -f1        sed -e  quot s    1       quot         sort        uniq -c        sort -nr fi

User · Answer

you can use whodid  https   www npmjs com package whodid     npm install whodid -g   cd your-project-dir   and    whodid author --include-merge false --path    --valid-threshold 1000 --since 1 week   or just type    whodid   then you can see result like this  Contribution state                                                        score    author -----------------------------------------------------  3059     someguy  lt someguy tensorflow org gt   585      somelady  lt somelady tensorflow org gt   212      niceguy  lt nice google com gt   173      coolguy  lt coolgay google com gt

User · Answer

To count number of commits by a given author  or all authors  on a given branch you can use git-shortlog  see especially its --numbered and --summary options  e g  when run on git repository     git shortlog v1 6 4 --numbered --summary   6904  Junio C Hamano   1320  Shawn O  Pearce   1065  Linus Torvalds     692  Johannes Schindelin     443  Eric Wong

User · Answer

this is the best way and it also gives you a clear picture of total number of commits by all the user  git shortlog -s -n

User · Answer

The best tool so far I identfied is gitinspector  It give the set report per user  per week etc You can install like below with npm  npm install -g gitinspector  The links to get the more details  https   www npmjs com package gitinspector  https   github com ejwa gitinspector wiki Documentation  https   github com ejwa gitinspector  example commands are   gitinspector -lmrTw  gitinspector --since 1-1-2017 etc

User · Answer

For windows users you can use following batch script that counts added removed lines for specified author    echo off  set added 0 set removed 0  for  f  tokens 1-3 delims      A in   git log --pretty  tformat  --numstat --author   1   do call  Count   A   B   C   echo added  added   echo removed  removed  goto  eof   Count   if NOT   1      -  set  a added  added     1   if NOT   2      -  set  a removed  removed     2 goto  eof   https   gist github com zVolodymyr 62e78a744d99d414d56646a5e8a1ff4f

User · Answer

mmrobins  AaronM  ErikZ  JamesMishra provided variants that all have an problem in common  they ask git to produce a mixture of info not intended for script consumption  including line contents from repository on the same line  then match the mess with a regexp    This is a problem when some lines aren t valid UTF-8 text  and also when some lines happen to match the regexp  this happened here    Here s a modified line that doesn t have these problems  It requests git to output data cleanly on separate lines  which makes it easy to filter what we want robustly   git ls-files -z   xargs -0n1 git blame -w --line-porcelain   grep -a   author     sort -f   uniq -c   sort -n   You can grep for other strings  like author-mail  committer  etc   Perhaps first do export LC ALL C  assuming bash  to force byte-level processing  this also happens to speed up grep tremendously from the UTF-8-based locales

User · Answer

A solution was given with ruby in the middle  perl being a little more available by default here is an alternative using perl for current lines by author   git ls-files -z   xargs -0n1 git blame -w   perl -n -e              s   d  4    print  1   n     sort -f   uniq -c   sort -n

[git] How to count total lines changed by a specific author in a Git repository?

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