userland-book/script/addprop

#!/bin/bash

ENTRY=$1
PROPERTY=$2

# Complain and exit if we weren't given a path and a property:
if [[ ! $ENTRY || ! $PROPERTY ]]; then
  echo "usage: addprop <path> <property>"
  exit 64
fi

if [ ! -e $ENTRY ]; then
  echo "$ENTRY not found"
  exit 66
fi

echo "marking $ENTRY with $PROPERTY"

# If the target is a plain file instead of a directory, make it into
# a directory and move the content into $ENTRY/index:
if [ -f $ENTRY ]; then
  echo "making $ENTRY into a directory, moving content to"
  echo "  $ENTRY/index"

  # Get a safe temporary file:
  TEMPFILE=`mktemp`

  mv $ENTRY $TEMPFILE
  mkdir $ENTRY
  mv $TEMPFILE $ENTRY/index
fi

if [ -d $ENTRY ]; then
  touch $ENTRY/$PROPERTY
else
  echo "something broke - why isn't $ENTRY a directory?"
  file $ENTRY
fi

echo kthxbai
exit 0