bash - The GNU Bourne Again shell
The GNU Bourne Again shell (Bash) is a shell or command language
interpreter that is compatible with the Bourne shell (sh). Bash
incorporates useful features from the Korn shell (ksh) and the C shell
(csh). Most sh scripts can be run by bash without modification.
by Siteshwar Vashisht (2019-08-16):
- BASH_CMD should not be writable in restricted shell