A bash script won't work because it will run `cd ..` in a new process which won't affect the current shell. But, the following do work in bash: alias cd..=

A bash script won't work because it will run `cd ..` in a new process which won't affect the current shell. But, the following do work in bash: alias cd..="cd .." or this in your `.bashrc` or some file you source in your `.bashrc`: cd..() { cd .. }