how to write my own shell

[recklinux]

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i wanna build a new shell for my linux environment ,i do the kernel compilation and all that but i ve an idea to buil my own shell how do i do that , is there any book or pdf for that so that i ll go in that direction i need study material and guidance if any one have
thanx
recklinux :o

[valan]

i wanna build a new shell for my linux environment ,i do the kernel compilation and all that but i ve an idea to buil my own shell how do i do that , is there any book or pdf for that so that i ll go in that direction i need study material and guidance if any one have
thanx
recklinux :o

Why create a new shell? There are plenty out there, likely with whatever features you are looking for.

ash
bash
chsh
csh
dash
esh
fosh
ksh
rc
sh
tcsh
zsh

Just to name a few

[recklinux]

please don't beat around the bush post reply only if you think u know the right answer , i wanna build a new shell if you know somethin just guide me how to build the shell of my own .
thanx

[burnit]

If you program, it's rather easy write an own basic shell... I suggest to write it in C, because you need to fork processes.

I've not found any book or how-to, but you can search on any university material: in a Operating System lessons, a basic shell program is a must because it explain how processes are created.

Then, major difficoulties can derive from how many features your shell must have: redirections, jobs management and so on...

Good Luck

[recklinux]

hey i said i wanna write my own shell means i atleast know that much of thing , i d done shell programming , i done DD etc so please any good one
thanx

[davebardsley]

RTFSC. Everthing you need to know is here:
ftp://ftp.cwru.edu/pub/bash/bash-3.0.tar.gz

[techieMoe]

please don't beat around the bush post reply only if you think u know the right answer , i wanna build a new shell if you know somethin just guide me how to build the shell of my own .
thanx

I had to do this for a project in college. One thing that helped me immensely was looking at the source code for a very tiny shell program, MSH (minishell). Here is a site with a lot of shells and source code for them:

http://www.ibiblio.org/pub/Linux/system/shells/!INDEX.short.html

[recklinux]

hey thanx techie that msh will work i think , that is really a good source to understand the shell

[valan]

This link might be useful

http://linuxgazette.net/111/ramankutty.html