rshell

This is an basic implementation of the bash shell. It is able to take in commands through the command line and execute them.

##How to Install

1. $ git clone https://github.com/jtran071/rshell.git
2. $ cd rshell
3. $ make
4. $ bin/rshell

##Usage The command format is: [command] [flag] Type in exit to exit the shell. As long as exit is the first word in the command line, it will be able to exit the shell.

Anything after # is commented out in the command line.

The tab character \t is treated as whitespace.

##Bugs, Limitations and Issues

Although this implementation is able to use many bash commands such as ls, echo, cat, and touch, it is unable to use the cd command.

The &&, ||, ; connectors are currently not working. Anything after &, |, ; is treated as a comment.

Using echo with &, |, ; will output a whitespace.

This implementation is also not set up for the inclusion of parenthesis used in the command line.

Able to run instances of rshell within itself.

Implementation of ls

rshell now has its own implementation of ls. The flags it currently supports are -a, -l, and -R.

To call this implementation of ls, however, you must run bin/ls (will go more in detail in the next section), otherwise you will run the bash version of ls.

How to Install ls

1. git clone https://github.com/jtran071/rshell.git
2. cd rshell
3. make
4. bin/ls

##Usage You can simply run ls by entering the command bin/ls. To use the flags, you can enter pass the arguments to bin/ls. For example, you can enter bin/ls -a to display the hidden files in the directory. You can also enter more than one flag by doing bin/ls -al or bin/ls -a -l, either one works. Furthermore, you can pass in directory names to see what files are in there by doing bin/ls directory or if you want to pass in flags you can do: bin/ls -a directory.

The directories are colored in blue, while the executables are colored in green. Hidden files have a gray highlighting. The display is sorted by alphabetical order ignoring case sensitivity with . files displayed first.

##Known Issues and Bugs with ls Currently, the -R flag is not functioning properly. When you run it, you will get error saying that the file or directory does not exist. The display may not output as neat as it should if long file names or large numbers are displayed. When taking flags, it does not output an error when a flag does not exist, it will simply do regular ls. Also if a working flag is in any part of -, it will work.