Hi, expected: $ i=0; ((i = i + 1)); echo $? 0
expected: $ i=0; ((++i)); echo $? 0 unexpected: $ i=0; ((i++)); echo $? 1 i is always set to 0, the result is always non-zero, but the return code differs. More info: a stable hardened Gentoo Linux: $ bash --version GNU bash, version 5.1.8(1)-release (x86_64-pc-linux-gnu) Copyright (C) 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software; you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Greetings from Hamburg-- Toralf
