Git - calculate how many lines of code were added/changed by someone

gitstats.sh

# Run this in the project repo from the command-line
# http://stackoverflow.com/a/4593065/99923

git log --shortstat --author "Xeoncross" --since "2 weeks ago" --until "1 week ago" | grep "files changed" | awk '{files+=$1; inserted+=$4; deleted+=$6} END {print "files changed", files, "lines inserted:", inserted, "lines deleted:", deleted}'

building on the previous solutions, if you want to skip certain files you can add -- ':!pattern'

git log --stat 0000000..HEAD -- ':!*test.go' | rg "files changed" | awk ...

Alias for ZSH folks:

alias pastmonth="git log --shortstat --author \"FL33TW00D\" --since \"31 days ago\" --until \"today\" | \
  grep -E \"file[s]* changed\" | \
  sed -E 's/changed, ([0-9]+) deletions/changed, 0 insertions(+), \1 deletions/g' | \
  awk '{files+=\$1; inserted+=\$4; deleted+=\$6} END {print \"files changed\", files, \"lines inserted:\", inserted, \"lines deleted:\", deleted}'"