Split each PDF page into a new PDF

pdfSplit.sh

#!/bin/bash

################################################################
#
# Gustavo Arnosti Neves
# https://github.com/tavinus
#
# Usage ./pdfSplit.sh file.pdf
#       ./pdfSplit.sh -c 20 file.pdf # if page count fails
#
# Download
#   wget 'https://gist.githubusercontent.com/tavinus/1a2ae53441b3fa725e93ec043b8b1112/raw/pdfSplit.sh' && chmod +x pdfSplit.sh
#   curl -O -J -L 'https://gist.githubusercontent.com/tavinus/1a2ae53441b3fa725e93ec043b8b1112/raw/pdfSplit.sh' && chmod +x pdfSplit.sh
#
# Sys Install
#   sudo cp pdfSplit.sh /usr/bin/pdfsplit && sudo chmod +x /usr/bin/pdfsplit
#
################################################################

if [[ "$1" = "-c" ]]; then
    pageCount=$2
    shift ; shift
else
    pageCount=0
fi

inFile="$1"
if [[ ! -f "$1" ]]; then
    printf "%s\n" "Error! Invalid input file! $1" >&2
    exit 1
fi

if [[ "$pageCount" = "0" ]] || [[ -z "$pageCount" ]]; then
    # grep may not work some times
    # pageCount=$(strings < "$inFile" | sed -n 's|.*/Count -\{0,1\}\([0-9]\{1,\}\).*|\1|p' | sort -rn | head -n 1)

    # Ghostscript implementation
    pageCount=$(gs -q -dNODISPLAY -dBATCH -sFileName="$inFile" -c "FileName (r) file runpdfbegin pdfpagecount = quit" 2>/dev/null)
fi

if [[ -z "$pageCount" ]] || [[ $pageCount -eq 0 ]]; then
    printf "%s\n" "Error! Invalid page count! $pageCount" >&2
    exit 1
fi

LOGFILE="$inFile""_split.log"
PAD="                                          "
ret=0

pageChars="$pageCount"
pageChars=${#pageChars}

#gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dSAFER -dFirstPage=14 -dLastPage=17 -sOutputFile=OUTPUT.pdf 
gsSplit() {
    gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH -dSAFER -dFirstPage=$1 -dLastPage=$1 -sOutputFile="${inFile%.pdf}_P$1"".pdf" "$inFile" >> "$LOGFILE" 2>&1
    ((ret+=$?))
}

padNum() {
    local diff="$(($pageChars-${#1}))"
    printf "%s" "${PAD:0:$diff}$1"
}

printf "\n%s\n%s\n\n" "Processing $pageCount pages in" "$inFile"

i=1
for ((i=1 ; i<=$pageCount ; i++)); do
    printf "%s " "$(padNum $i)"
    if [[ $(($i%10)) -eq 0 ]]; then
        printf "%s\n" ""
    fi
    gsSplit $i
done

[[ $(($(($i-1))%10)) -ne 0 ]] && printf "\n" ""

printf "\n%s\n%s\n" "All done!" "$(($i-1)) files processed!"
exit $ret

To force a page count:

./pdfSplit -c <page_count> file.pdf

Example for 20 pages on a 71-page file:

$ ./pdfSplit.sh -c 20 rpt_list_rfer_completo_indiv1porfolha.pdf

Processing 20 pages in
rpt_list_rfer_completo_indiv1porfolha.pdf

 1  2  3  4  5  6  7  8  9 10
11 12 13 14 15 16 17 18 19 20

All done!
20 files processed!

Any page that does not exist will generate a blank PDF, but no error.