Create and store aliases in a directory? Who have you been talking to??
I assume you mean an alias for commands. For instance, typing "ll" at the command prompt, and expecting it to execute "ls -l". Those aliases aren't stored as files; they're settings in your ~/.bashrc (normally). Just open ~/.bashrc in a text editor, and define whatever aliases you want. To continue the example I mentioned earlier, you would add a line like this to your ~/.bashrc:
The next time you login, the aliases will be set automatically.
