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Home > Forums > Programmers > Languages > UNIX Scripting Forum

Compare numbers

CODE --> (ba|k)sh

(( difference=first-second )) # calculate the difference
(( ${difference/#-}<6 )) && echo 'YES' || echo 'no' # test the difference's absolute value

Tested with Bash and MKsh.

For a working test example you may check this in Bash ( sorry, to lazy to write Ksh-friendly while loop now ) :

CODE --> bash

for ((i=-5;i<=5;i++)); do for ((j=-5;j<=5;j++)); do (( d=i-j )); printf '%3d %3d %s\n' "$i" "$j" "$( (( ${d/#-}<6 )) && echo 'YES' || echo 'no' )"; done; done

Feherke.
http://feherke.github.com/

alan147 (TechnicalUser)

1 Jul 12 13:12

Feherke

That's great just what I wanted to do.

Thanks

Alan

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