The bash-4.4 has a known problem that adversely affects the operation of the SX-Aurora TSUBASA System. It is included in the ISO image of the RHEL/CentOS 8.2-8.4. Please update bash-4.4 to a fixed or later version.
On the RHEL/CentOS 7 or RHEL 8.5, it is not necessary to update bash.

Please refer the latest SX-Aurora TSUBASA Installation Guide to update bash.

List of fixed version
*RHEL 8.2
*bash-4.4.19-12.el8_2.x86_64.rpm
*RHEL 8.3
*bash-4.4.19-14.el8_3.x86_64.rpm
*RHEL 8.4 / CentOS 8.2/8.3/8.4
*bash-4.4.20-1.el8_4.x86_64.rpm

* Update History
* 2020/03/31 RHEL/CentOS 8.4 information added, RHEL/CentOS 8.1 information removed, content title updated.