Dear All, Can someone shed light on the difference in behaviour of bash 4.1. and 3.25? I am out of ideas.
Regards, Alexander Chupin $ bash --version; s=12345;if [[ "$s" =~ '^[0-9]+$' ]]; then echo it is a number; else echo it is NOT a number; fi GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2009 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. it is NOT a number $ bash --version; s=12345;if [[ "$s" =~ '^[0-9]+$' ]]; then echo it is a number; else echo it is NOT a number; fi GNU bash, version 3.2.25(1)-release (x86_64-redhat-linux-gnu) Copyright (C) 2005 Free Software Foundation, Inc. it is a number
