minor improvements

Author: jfilter

README.md

@@ -69,6 +69,7 @@ Bash is still the most-used shell. And the scipts comprise mostly of simple cond
 - https://0xacab.org/jvoisin/mat2
 - https://github.com/NicolasBernaerts/ubuntu-scripts/blob/master/pdf/pdf-repair
 - https://scantailor.org/ (unmantained)
+- [more tools for PDF in my blog post](https://johannesfilter.com/python-and-pdf-a-review-of-existing-tools/)
 
 ## Development
 

ocr_pdf.sh

@@ -16,6 +16,8 @@ set -x
 # https://ocrmypdf.readthedocs.io/en/latest/docker.html#adding-languages-to-the-docker-image
 # https://github.com/tesseract-ocr/tesseract/blob/master/doc/tesseract.1.asc#languages
 # eng - English, deu - German, spa - Spanish, fra - French, por - Portuguese, chi_sim - Chinese simplified
+# to use OCR with more than one language: -l deu+eng
+#
 #
 # Please report issues at https://github.com/jfilter/pdf-scripts/issues
 #

setup.sh

@@ -29,5 +29,6 @@ fi
 if [ -f /etc/lsb-release ]; then
   # not sure, TODO
   apt-get update && apt-get install -y parallel ghostscript mupdf-tools qpdf poppler-utils detox libimage-exiftool-perl imagemagick
-  apt-get install -y containerd docker.io
+  # not sure about Docker installation
+  apt-get install -y docker-ce docker.io
 fi

utils/pages_with_text.py

@@ -2,6 +2,8 @@
 
 from pdflib import Document
 
+# TODO: use import `pdftotext`, pdflib is hard to install
+
 parser = argparse.ArgumentParser(
     description="checks for presence of absence of text on images"
 )