small scripts used to create a full pdf document.

joinpdf.sh

#!/bin/bash

if [[ `uname` =~ MINGW.* ]]; then
    GS=gswin64c
else
    GS=gs
fi

output=$1
shift
filelist=$@
filelist=$(echo ${filelist[*]} | tr ' ' "\n" | sort)

processed_files=""
for f in $filelist; do
    if [ ${f##*.} != pdf ]; then
        convert $f ${f%%.*}.pdf
        f=${f%%.*}.pdf
    fi
    processed_files="${processed_files}${f} "
done
filelist=$processed_files

$GS -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=$output $filelist

# Alternatively:
gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=contract.pdf $(ls)
# To split:
gs -sDEVICE=pdfwrite  -dNOPAUSE -dQUIET -dSAFER -o splitted.%d.pdf contract.pdf