templated_checklists

#!/bin/bash

# This script is intended to be run out of cron.  The goal is to
# make todo.txt style checklists for repeated, one-off throwaway use,
# i.e. I have a checklist for all the stuff I need to take with me
# when my kids and I go swimming.
#
# It takes two arguments: a source directory, which should contain
# some blank checklists, and a destination directory, which should
# get filled with fresh copies of each checklist if and only if the
# target file has not been modified in the last 3 hours.
#
# In other words, there should always be a fresh copy of the
# checklist in the destination dir, but it should never be stomped on
# while you're actually using it.

# Time in minutes to let the user work on the checklist
fmin=240
sourcedir=$1
if [[ ! -d $sourcedir ]]
then
  echo "First argument should be the template directory."
  exit 1
fi

destdir=$2
if [[ ! -d $destdir ]]
then
  echo "Second argument should be the destination directory."
  exit 1
fi

for file in $(find $sourcedir -type f)
do
  echo "- Considering $file"
  fname=$(basename $file)
  destf=$destdir/$fname
  if [[ -f $destf ]]
  then
    echo "  - Found $destf ; checking activity"
    if [[ $(find $destf -mmin -$fmin -type f | grep "^$destf$") ]]
    then
      echo "  - $destf has been modified too recently ; leaving alone"
    else
      echo "  - $destf has been modified more than $fmin minutes ago ; replacing"
      cp $file $destf
    fi
  else
    echo "  - No file $destdir/$fname ; copying from $file"
    cp $file $destf
  fi
done