Project source can be downloaded from https://github.com/Liniarc/rshell.git

###Author & Contributor List Thomas Liu

###Synopsis

Recreate command shell for CS100 assignment in Haskell

The shell is capable of taking in a command line and executing it similarlly to how it'd be executed in the Bash shell.

In addition, there is a clone of ls and cp which which emulates the bash built-in commands.

In order to run this program, you need to have the ghc compiler.

#####rshell Short-circuit of && and || will short-circuit all remaining commands even if remaining commands would normally be executed e.g. true || echo 1; echo 2 will not run echo 2 This is different from the Bash terminal would create sub operators such that the command would run as (true || echo 1); echo 2 which would call echo 2

Parenthesis are not supported of logical operators (or in general)

Will not work if in script mode

IO redirection of specific file descriptors do not work. i.e. $ g++ main.cpp 2> errors will not work

Any additional strings between the first io message and next connector will be ignored. i.e. $ cat < file AAAAA > file2 AAAAA will ignore AAAAA

rshell displays the full path rather than replacing $HOME with ~

running rshell from within rshell will crash when escaped with Ctrl + C

#####ls

ls will output uppercase files before lowercase files

ls will not minimize column lengths and pad all files to the length of the longest file

ls -l has set width of columns. If a cell is too long, it will throw off the entire row (i.e. a file with 100+ links to it)

ls displays the files in order horizontally instead of vertically.

ls assumes screen width of 80 rather than dynamically determining that