Create shell script to convert .md to .pdf

quick-start-guides/convert_to_pdf.sh

+#!/bin/bash
+
+# Checks for the presence of markdown files
+echo
+md=$(ls -1 *.md 2>/dev/null | wc -l) # ls -1 list one file per line
+mdown=$(ls -1 *.mdown 2>/dev/null | wc -l)
+mark=$(ls -1 *.markdown 2>/dev/null | wc -l)
+present=$(($md+$mdown+$mark))
+if [ "$present" -eq 0 ]; then
+	echo -e "No markdown files detected!\n"
+	exit
+fi
+pdf_dir="PDFs"
+# Checks for output directory and creates one if missing
+if [ ! -d $pdf_dir ]; then
+	mkdir $pdf_dir
+	echo -e "Output folder created.\n"
+else
+	echo -e "Selecting existing output folder.\n"
+fi
+
+# Asks user for the LaTeX engine to be used
+echo -e "LaTeX engines\n------------\n"
+PS3=$'\n'"Please choose a LaTeX engine: "
+select option in pdflatex lualatex xelatex
+do
+    case $option in
+        pdflatex) 
+            echo -e "\npdflatex engine selected";;
+        lualatex) 
+            echo -e "\nlualatex engine selected";;
+        xelatex)
+        	echo -e "\nxelatex";;
+        *)
+			echo "Please choose an option";;
+	esac
+	break
+done
+echo
+
+# Allows user to add custom LaTeX variables 
+echo -n "Would you like to add any LaTeX details(e.g. --variable mainfont:\"Gill Sans\")?: "
+read variable
+
+# Compiles documents
+echo -e "\nBeginning conversion...\n"
+
+count=0
+
+find . -iname "*.md" -o -iname "*.mdown" -o -iname "*.markdown" | while read -r i; do # find -iname finds <pattern> case insensitive
+	y="$i"
+	x="${y%.*}"
+	z="${x##*/}"
+
+	pdf_filename="$z.pdf"
+	pdf_path="./${pdf_dir}/${pdf_filename}"
+	
+	created_date=$(stat -c %y $pdf_path) # Get file last modified date and time
+	IFS=" " read -r a b c <<< "$created_date" # split the string into 3 parts (date time timezone_offset)
+	file_date="$a" # the first part is the date
+	ftime="${b%.*}" # the second part is the time (but its too exact, so strip everything after the .)
+	file_time=${ftime//:} # remove the colons from the time stamp
+
+	bak_pdf_filename="${z}_${file_date}-${file_time}.pdf" # create new filename
+	bak_pdf_path="./${pdf_dir}/${bak_pdf_filename}"
+
+	if [ -f $pdf_path ]; then
+		echo "File $i was already converted."
+		mv $pdf_path $bak_pdf_path
+		echo "Existing file was renamed to $bak_pdf_filename"
+	fi
+	pandoc -f markdown $i --pdf-engine=$option --variable font-family:sans-serif $variable -o $pdf_path
+
+	# ((count++))
+	# echo "$count file compiled."
+done
+
+echo -e "\nAll files complete!"