A List of Variables Used By Ion Shell
Implemented
- ?: Displays the last command's exit code
- DIRECTORY_STACK_SIZE: Defines the maximum size of the internal directory stack buffer
- HISTORY_SIZE: Defines the maximum size of the internal history buffer
- HISTORY_FILE: If set to 1, enables writing a history log to disk
- HISTORY_FILE_SIZE: Defines the maximum amount of commands to retain in the log
- HOME: Displays the current user's home directory
- OLDPWD: Displays the previous working directory
- PWD: Displays the current working directory
- PROMPT: Contains the Shell Prompt
- USER: Displays the current user
Not Implemented
???