This is iterate project for C/C++ experience; we are making a UNIX
shell, this will NOT work on Windows but it will work on OS X and
any other UNIX aka any Linux.
Your code should be implemented in the .cpp files with an
appropriate API exposed in the respective .h file.
Congrats, on OS X you don't need to do anything other than have
XCode installed.
The project uses clang and the fsanitize so you'll need to have
these installed on your machine, use aptitude
$ aptitude install libc++1 clang lldb make libasan1 libasan1-dbg libasan0Your options are:
- Get rid of Windows, install Linux (Debian or Ubuntu is good)
- Dual boot Linux and Windows
- Get a Virtual Machine on Windows, can use VMWare or Virtual Box.
A shell is a REPL, which stands for: READ EVALUATE PRINT LOOP. It
takes a line of input, evaluates it, prints the results and loops
again. So the first step is to write code that takes a line of input
from the user. Once you get that line of input, you need to parse
it, that is turn it into something understand about. Take for example:
$ git statusWhat will your shell really read in?
*HINT: How much should you keep reading? When do you stop reading from `stdin`?*
You shell will get:
"git status"
And this isn't useful yet. You need to split the string into different
parts. Remember that many programs have short flags and long flags,
aka - and --.
*HINT: Read about shell redirection, you will need to handle the
special symbols |, <, and >
Once you have that all together, you need to think about process management.
Unix process management is a hierarchieral relationship. When we start
a prorgram, say git, we have this relationship.
bash
|--git
That is, bash is the parent of git. You can see the entire process
tree with
$ pstree
If you don't have pstree then use aptitude to install it,
$ aptitude install pstree.
You should be invoking iterate_shell as so:
$ make test_shell