Initial commit

split.sh

@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+
+set -eu -o pipefail
+
+pages="$1"
+infile="$2"
+outdir="$3"
+
+if [ ! -f "$infile" ]; then
+	echo "$infile does not exist" 2>&1
+	exit 1
+fi
+
+if [ -e "$outdir" -a ! -d "$outdir" ]; then
+	echo "$outdir must be a directory or not exist at all" 2>&1
+	exit 1
+fi
+mkdir -p "$outdir"
+
+if [ "$((${pages}%2))" -ne 0 ]; then
+	echo "The number of pages ($pages) must be even" 2>&1
+	exit 1
+fi
+
+i=0
+while [ "$i" -lt "$pages" ]; do
+	paperjam "select { $((${i}+1)) $((${i}+2)) }" "$infile" "$outdir/$(printf '%0*d' ${#pages} $i).pdf"
+	i="$((${i}+2))"
+done