Not all bash commands work in dunesh. Why?

[stustd]

It says that You can do all the normal shell operations like piping, file redirection, and running programs. However, the bash command pushd <some_dir> doesn't work in the dunesh. Any reason why?

[whogotpwned]

I think pushd is a shell builtin, not a separate executable binary. It's specific to certain shells like Bash and is not part of the POSIX standard set of commands.