imgs2pdf.sh

#!/bin/bash

WORKDIR=~/Desktop/untitled
OUTPUTDIR=~/Desktop/pdfed

[[ ! -d $OUTPUTDIR ]] && mkdir $OUTPUTDIR

echo $WORKDIR
for FOLDER in $WORKDIR/*; do

    [[ ! -d "$FOLDER" ]] && continue

    NAME=`basename "$FOLDER"`
    echo $NAME

    convert -limit memory 2GiB "$FOLDER/*.{jpg,jpeg,png}" "$OUTPUTDIR/$NAME.pdf"

    [[ ! $0 > 0 ]] && trash "$FOLDER"

done