% uname -a**** Linux dph1d1ods13 2.6.32-279.2.1.el6.x86_64 #1 SMP Thu Jul 5 21:08:58 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux****
% bash --version**** GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu)**** The ((i++)) fails only when the result is 1. When the result is 0 or 2, it does not fail. This is a problem when 'set -e'. ### i++ failes when ‘I’ becomes one. i=0 echo $? 0 % (( i++ )) % echo $? ### this should not fail 1 % (( i++ )) % echo $? 0 % (( i++ )) % echo $? 0
