POSIX doesn't have any of that. https://pubs.opengroup.org/onlinepubs/9799919799/utilities/ https://pubs.opengroup.org/onlinepubs/9799919799/utilities/ "I got

POSIX doesn't have any of that. https://pubs.opengroup.org/onlinepubs/9799919799/utilities/ https://pubs.opengroup.org/onlinepubs/9799919799/utilities/ "I got used to fish and vi mode which are not available when I ssh into servers, containers." POSIX does mention vi mode as an optional feature. "Allow shell command line editing using the built-in vi editor. Enabling vi mode shall disable any other command line editing mode provided as an implementation extension. This option shall be supported if the system supports the User Portability Utilities option."