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Top Forums Shell Programming and Scripting Syntax error in subtraction in Bash Post 303040005 by ngabrani on Monday 21st of October 2019 12:50:50 PM
Old 10-21-2019
Syntax error in subtraction in Bash

I am sharing a code snippet.
Code:
for (( i=0; i<=$(( $count -1 )); i++ ))
do

	first=${barr2[$i]}
	search=${barr1[$i]}
        echo $first
	echo "loop begins"
	for (( j=0; j<=5000; j++ ))
	do
		if [[ ${harr1[j]} == $search ]]; then
			echo $j
			break;
		fi

	done
	second=${harr2[$j]}	
	echo $second
	
	diff=$((second-first))
	echo "diff" 
	echo $diff
done

I am getting a syntax error in line of subtraction that says something like:
syntax error: invalid arithmetic operator (error token is ".0985146")

This is the line that gives error.
Code:
	diff=$((second-first))

Appreciate your help.
 

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g-ir-compiler(1)					      General Commands Manual						  g-ir-compiler(1)

NAME
g-ir-compiler - typelib compiler. SYNOPSIS
g-ir-compiler [OPTION...] GIRFILE DESCRIPTION
g-ir-compiler converts one or more GIR files into one or more typelib. It can either emit the raw typelib blob (default behavior) or C code (--code). The output will be written to standard output unless the --output is specified. OPTIONS
---help Show help options ---code Emit C code which is suitable for including in a shared library instead of a raw typelib. ---output=FILENAME Save the resulting output in FILENAME. ---verbose Show verbose messages ---debug Show debug messages ---no-init Do not include an initialization snippet to register the typelib in the respository. This can only be used if --code is also speci- fied. ---includedir=DIRECTORY Adds a directory which will be used to find includes inside the GIR format. ---module=MODULE FIXME ---shared-library=FILENAME Specifies the shared library where the symbols in the typelib can be found. The name of the library should not contain the leading lib prefix nor the ending shared library suffix. BUGS Report bugs at http://bugzilla.gnome.org/ in the glib product and introspection component. HOMEPAGE and CONTACT http://live.gnome.org/GObjectIntrospection AUTHORS
Mattias Clasen g-ir-compiler(1)
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