Sane command-line scanning bash shell script on Linux with OCR and deskew support. The script automates common scan-to-pdf operations for scanners with an automatic document feeder, such as the awesome Fujitsu ScanSnap S1500, with output to PDF files.

Tested and run regularly on Fedora, but should work on other distributions with the requirements below.

Features

Deskew (if supported by scanner driver, or software-based via unpaper)
Crop (if supported by scanner driver)
Creates searchable PDFs (with tesseract)
Duplex (if scanner supports it)
Specify resolution
Truncate n pages from end of scan e.g. duplex scanning with last page truncated
Specify page width and height for odd size pages, or common sizes (Letter, Legal, A4)
Output to single file, or to a list of files

Requirements

bash
pnmtops (netpbm-progs)
ps2pdf (ghostscript)

Optional

unpaper (for software deskew)
flock (usually provided by util-linux) (for properly ordered verbose logs)