[user@localhost ~]$ bash --version
GNU bash, バージョン 4.2.29(1)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2011 Free Software Foundation, Inc.
ライセンス GPLv3+: GNU GPL バージョン 3 またはそれ以降 <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.
[user@localhost ~]$ echo {1 .. 5}
{1 .. 5}
[user@localhost ~]$