Building an own linux/ubuntu shell

micflunu · 10-10-2012, 01:02 AM

I have this project that asks me to Develop my own linux/ubuntu shell that:-

[a command accepting another command as an argument and executes that command]
[Display the process statistics and details of background tasks]

But the problem is i know nothing on how to build my own shell.I have tried to google some but the info i got was not brief enough with my short time deadline of submission.so i was hoping that some one to help me with materials to read??
Tnx

pixellany · 10-10-2012, 01:35 AM

Is this homework? ....a project for your work?

When you say "develop a shell", do you mean something like BASH (the shell used by most Linux distros)?

What programming languages do you know?

micflunu · 10-10-2012, 01:42 AM

well i am working with C scripting.Yes i am a beginner to this course so i don't know much.Yes a simple C shell using a Vi editor

pixellany · 10-10-2012, 01:50 AM

Do you mean the C programming language? (C is not a scripting language---programs have to be compiled). Have you already written C programs?

Have you studied the structure of a typical Linux shell? Have you looked at the source code for any of them?

Please give as much context as possible---including a description of what you are already expected to know from the class.

malekmustaq · 10-10-2012, 02:01 AM

It appears that micflunu is on to create a shell script --giving problem as creating a SHELL to a newbie is less expected.

So for that matter, micflunu you can start learning the basic on Bash Shell Scripting you can begin from this link.

Hope that helps.

alexantosh · 10-27-2012, 08:20 AM

pixellany, i guess it's "programming!". i have the same project with a few hours to go. so any help, ideas will be greatly appreciated. i guess i have to use things like fork(), child processes that am less familiar with at the moment. mainly to implement few functions like, ls, cd, pwd, cat. just if i get the starter code running i think i will find a way to implement these functions. thanks in advance

malekmustaq · 10-27-2012, 12:24 PM

Quote:

Originally Posted by alexantosh

pixellany, i guess it's "programming!". i have the same project with a few hours to go. so any help, ideas will be greatly appreciated. i guess i have to use things like fork(), child processes that am less familiar with at the moment. mainly to implement few functions like, ls, cd, pwd, cat. just if i get the starter code running i think i will find a way to implement these functions. thanks in advance

If that must we call 'programming' then we may agree here that your concern is mainly about "*nix/Gnu/Linux Systems Programming" since these systems implement shells that frequently make C library function calls.

Here is a good book that may help you.

Hope that helps.

Good luck.

m.m.

alexantosh · 10-27-2012, 05:24 PM

Thanks, i guess its worth a short. let me see if it can get me started atleast