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