Mark-Olivier Poulin

Initially built this tool as a joke. It analyzes commits of a repository and provides detailed analytics of all contributions made by a selected contributor. Turns out it's actually a little bit toxic hence the name.

Disclaimer

The tool was created exclusively for analytical purposes and not for exposing or discriminating against coworkers.

Anyway, if you want to use this follow these steps below.

Steps

Step 1

Go to your bin folder:

cd /usr/local/bin

Step 2

Create a file called git_stats.sh:

sudo touch git_stats.sh

Step 3

Copy paste the code below in the git_stats.sh file with your favorite text editor:

pssst... I recommend using vim:

sudo vim git_stats.sh

authors=$(git shortlog -sne --all | awk '{print $2}')
 
if [ -z "$authors" ]; then
  echo "Error: No authors found in the repository."
  exit 1
fi
 
echo "Available authors:"
echo "$authors"
read -p "Select an author from the list: " selected_author
 
if ! echo "$authors" | grep -q "$selected_author"; then
  echo "Error: Invalid author selection"
  exit 1
fi
 
commit_stats=$(git log --author="$selected_author" --pretty=tformat: --numstat | awk '
  { inserted += $1; deleted += $2; delta += $1 - $2; ratio = deleted / inserted; files_changed += NF / 3; }
  END {
    printf "| Lines added (total)      | %s |\n", inserted
    printf "| Lines deleted (total)    | %s |\n", deleted
    printf "| Total lines (delta)      | %s |\n", delta
    printf "| Add./Del. ratio (1:n)    | 1 : %s |\n", ratio
    printf "| Total files changed      | %s |\n", files_changed
  }')
 
commit_summary=$(git log --author="$selected_author" --pretty=format:"| %h | %ai | %s" --shortstat)
 
delta_time=$(git log --author="$selected_author" --pretty="%at %h" | sort -n | awk '
  NR>1 {
    delta = $1 - prev
    printf "| %dd %02d:%02d:%02d   | %s |\n", delta/86400, delta%86400/3600, delta%3600/60, delta%60, $2
  }
  { prev = $1 }'
)
 
number_of_branches=$(git branch -a | wc -l)
 
file_types_changed=$(git log --author="$selected_author" --pretty=tformat: --numstat | awk '
  NF==3 {
    total_changes += 1;
    split($3, parts, ".");
    extension = parts[length(parts)];
    file_changes[extension] += 1;
  }
  END {
    printf "|   Total Files Changed     | %s |\n", total_changes;
    printf "|   Files Changed by Type       | \n";
    for (type in file_changes) {
      printf "|   %-23s | %s |\n", type, file_changes[type];
    }
  }
')
 
commits_per_day=$(git log --author="$selected_author" --pretty="%ad" --date=short | sort | uniq -c | awk '{printf "| %s |        %s        |\n", $2, $1}')
 
echo "\nCommit summary for author $selected_author:"
echo "$commit_summary"
 
echo "\nCommit statistics for author $selected_author:"
echo "-----------------------------------"
echo "$commit_stats"
echo "-----------------------------------"
 
echo "\nDelta Time Between Consecutive Commits (sorted by commit order):"
echo "________________________________"
echo "|  Time Elapsed  | Commit Hash |"
echo "---------------------------------"
echo "$delta_time"
echo "---------------------------------"
 
echo "\nCommits per Day:"
echo "---------------------------------"
echo "|    Date    | Number of Commit |"
echo "---------------------------------"
echo "$commits_per_day"
echo "---------------------------------"
 
echo "\nAdditional Stats:"
echo "-----------------------------------"
echo "$file_types_changed"
echo "-----------------------------------"
 
echo "\nNumber of branches: $number_of_branches"
echo "-----------------------------------"

Step 4

Run this command to make the script executable, allowing it to be run directly as git_stats.sh

sudo chmod +x git_stats.sh

Step 5

Navigate to your git repository of choice and run git_stats.sh:

git_stats.sh