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Full Discussion: Syntax in a simple script
Top Forums UNIX for Beginners Questions & Answers Syntax in a simple script Post 303039700 by Yoda on Saturday 12th of October 2019 12:41:14 PM
Old 10-12-2019
I noticed several syntax errors in your script.
  • If and elif conditional expressions missing blank spaces
  • Use -eq instead for numerical comparison
  • One can increment variable within (( )) without a $
  • Variable assignment $i=0 is incorrect. Remove the $
  • Array assignment missing $ sign before variable: file1

Here is the code with corrections:-
Code:
while read file1
do
        echo $file1
        echo $i
        if [ $i -eq 1 ]; then
                arr1[$j]="$file1"
                (( i++ ))
        elif [ $i -eq 2 ]; then
                arr1[$j]="$file1"
                (( i++ ))
        else
                i=0
                (( j++ ))
        fi
done

 

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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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