Hi,
Does anyone know of any open source code for a Command Line Interpreter that I can use for an embedded linux system I'm currently working on. I can't that people keep writing this from scratch.
Thanks in advance!
Dave M.
Lots of people do write them from scratch: it's pretty easy. A loop full of if(strcmp()) statements over a strtok() loop is OK for many simple tasks. Or there's yacc/bison parsers if you need to get a bit fancier.
If you want something pretty fleshed out, though, tcl, several scheme interpreters (eg guile) and several forth or forth-like languages (eg ficl) or lua, or even something really meaty like python or javascript have all been used. All have open-source implementations available. Several may already be there in your embedded linux system.
How fancy do you want to get?
Cheers,
-- Andrew
AFAIK, the system already separates the parameters of the command line when starting a program. I seem to remember that it even tries to assign handles to the files that are denoted by the first two parameters.
But maybe I'm wrong.
-Michael
What exactly do you mean by command line interpreter -- a shell?
If so, look at busybox:
HTH
Rob
-- Robert Kaiser email: rkaiser AT sysgo DOT com SYSGO AG http://www.elinos.com Klein-Winternheim / Germany http://www.sysgo.com
It's the shell that does that.
--
I suppose that would help David. So he needs to find out how the shell provides this information (an array of pointers ?) to to program that is started.
-Michael
It is on the manpage:
man 3 exec
and, remember that the sub-process startup is on two phases in UNIX-like systems: fork() and exec().
-- Tauno Voipio tauno voipio (at) iki fi
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