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Full Discussion: Proper syntax
Top Forums UNIX for Dummies Questions & Answers Proper syntax Post 302674303 by jim mcnamara on Thursday 19th of July 2012 10:42:52 AM
Old 07-19-2012
With a long series of pipes it can be hard to trap and respond correctly to an error.
More pipes makes that harder to. Learn about the PIPESTATUS array if you want to write solid bash and use lots of pipes.

Some operations require pipes to become more efficient, e.g., pipes "cost" less disk space. And leave behind no intermediate files.

The book 'Code Complete' recommends that a line of code be split with continuation "\" when it gets beyond the max line length on your screen: ~80 character positions, including leading tabs and spaces. You can also split on a pipe symbol. This is to provide readability for the next guy.
 

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LEARN ABOUT DEBIAN

pct-scanner-script

PCT-SCANNER-SCRIPT(1)					      General Commands Manual					     PCT-SCANNER-SCRIPT(1)

NAME

       pct-scanner-script - easy scan and create merged DjVu and PDF documents for archiving

SYNOPSIS

       pct-scanner-script [--help]

DESCRIPTION

       pct-scanner-script  is  a  bash script and configuration system to easily scan documents and create a digital archiving. It can create DjVu
       PDF and JPEG outputs, in merged and individual files. It also has a configuration system where different  configurations  can  be  defined,
       making it easy to switch between configurations.

       Please use pct-scanner-script --help to find all program options, the complete help, and all examples.

       Features:
	 - auto archiving in merged and individual DjVu, PDF, and JPEG files
	 - auto and manual resume when scanning somehow fails
	 - cascading configuration system, for easy customizing
	 - easy command-line-style bash program, with useful options
	 - archiving made possible with both adf and flatbed scanners
	 - built for productivity and daily use
	 - uses bash, scanadf and other mainstream processing tools
	 - multilanguage commandline output

OPTIONS

       -h, --help, -?
	      Show summary of options, help, and examples.

DEBUGGING

       This  program  is  a  helper  script  to easy scan and automated digital document archiving for normal and adf scanners. You can debug this
       script by running it as bash -x pct-scanner-script [options]. The script is just a nice wrapper for the scanadf, DjVu and PDF tools.

SEE ALSO

       scanadf(1),

AUTHOR

       pct-scanner-script and this manual page are written by:
	      Jelle de Jong <jelledejong@powercraft.nl>.

								  March 31, 2009					     PCT-SCANNER-SCRIPT(1)
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