Search notes:

pct-scanner-script

pct-scanner-script is a bash script (with configuration facility) that drives scanadf, DjVu and PDF tools to create DjVu and PDF output from a scanner.
It's quite clumsy in handling it and does not produce what you want.
Apparently, it does not support OCR! 
$ psct-scanner-script -c --device epkowa:net:192.168.1.102 --source Flatbed -o ~/scanner/output
Get a list of available scanner devices: 
$ pct-scanner-script --search
-a is a synonym for --search.

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Linux/sc...', 1759422860, '216.73.216.42', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Linux/scanner/pct-scanner-script/index(49): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78