Shell function used to force a date when creating a git commit

git-commit-date.sh

# The date format can be any valid input string for GNU date tool
# GNU date examples: https://www.gnu.org/software/coreutils/manual/html_node/Examples-of-date.html
# Some usage examples:
#   git-commit-date "now +3 hour" --all
#   git-commit-date "2 days ago"
#   git-commit-date "1933-01-16 22:32:44" -m "Where were you on the night of January the 16th?"

function git-commit-date(){
    
  export GIT_AUTHOR_DATE=`date -d"$1" --rfc-email`
  export GIT_COMMITTER_DATE=$GIT_AUTHOR_DATE
   
  shift 
  git commit $@

  unset GIT_AUTHOR_DATE
  unset GIT_COMMITTER_DATE
}