Features.md

Additional Features

In the COMP0010 Shell, we have extended the shell to incorporate History Substitution and Auto-Completion.

Features

History Substitution

Allows the substitution of the current command with previously executed commands by using the 'up' and 'down' arrow keys

Usage:

Use 'up' and 'down' key to cycle through previously executed commands

Example Usage:

At command prompt {some_directory}>, pressing the 'up' arrow key at input prompt substitutes the current command with last command executed

Auto-Completion

Enables Auto-completing the current input with a file or directory that starts with the current input, if there is more than one matching all matching files and directories are printed to the shell instead.

Usage:

At prompt, enter a string to be extended, then auto-complete it by pressing TAB

Example usage:

Let dir contain the following files: {aaa, aad, bbb}

At command prompt dir> , typing 'a' then pressing tab, prints all the files and directories that start with 'a' to the shell that is aaa aad and prompts the next command

At command prompt dir> , typing 'b' then pressing tab, auto-completes 'b', that is extend 'b' to 'bbb'