[the_arun]

Shell history is wiped out after user logged out for a reason. More details are here - https://www.securityhq.com/blog/security-101-dont-bash-your-....

[wswope]

Please read the page you linked; it’s flushed to a file, not wiped.

[euos]

It is not. I definitely use months-old bash history through !? shortcuts.