Determine how productive your team has been using git history.

gistfile1.txt

git log --shortstat --since="1 year ago" --until="now" \
  | grep "files changed\|Author\|Merge:" \
  | awk '{ \
    if ($1 == "Author:") {\
      currentUser = $2;\
    }\
    if ($2 == "files") {\
      files[currentUser]+=$1;\
      inserted[currentUser]+=$4;\
      deleted[currentUser]+=$6;\
    }\
  } END {\
    for (i in files) {\
      print i ":", "files changed:", files[i], "lines inserted:", inserted[i], "lines deleted:", deleted[i];\
    }\
  }'