find_unused_graphics.sh

#!/bin/bash

# script to go through all figures, search all of our *.tex
# files to see if the figure is still included, and 
# if not, print it to standard output
# pipe to rm to delete the unused ones then.

set -e

latex_dir=""

if [[ ! -n "${latex_dir}" ]]; then
    echo "Please enter the full path for 'latex_dir' in the script."
    echo "Abort."
    exit 10
fi

# separate by spaces; dir names must not include spaces
figureDirs="${latex_dir}/rendered/"

for dir in ${figureDirs}; do
	cd "${dir}"
	for file in *; do
		count=$(find ${latex_dir} -name "*.tex" | xargs grep $file | wc -l)
		if (( "$count" == 0 )); then
			echo "${dir}/${file}"
		fi
	done
done