precommit hook for granovaGG git repository

granovaGGpre-commit.sh

#!/bin/bash

D=`date +%Y%m%d%H%M%S`  # store the current system-clock as a date-stamp, down to the second
branch=`git status|grep -ie 'on branch master'` 

if [ -z "$branch" ]; then # if the length of the string in variable "branch" is zero;
                          # or, in other words, if you're not on the master branch
  cat DESCRIPTION | sed -e 's/^\(Version: [0-9]*\.[0-9]*\).*/\1.'$D'/' > DESCRIPTION.temp # cat the DESCRIPTION
                                                                                          # match on the version number
                                                                                          # append the full datestamp to the matched version number
                                                                                          # redirect the output to a temporary file

  rm DESCRIPTION                    # trash the original DESCRIPTION
  mv DESCRIPTION.temp DESCRIPTION   # rename the temp file to DESCRIPTION
  git add DESCRIPTION               # stage the now-modified DESCRIPTION file
fi