Subj : Re: How to execute a shell command
To   : borland.public.cpp.borlandcpp
From : Jack Klein <jackklein@spamcop.net>
Date : Mon Feb 02 2004 01:55 am

On 1 Feb 2004 22:54:36 -0800, "Siemel Naran" <SiemelNaran@att.net>
wrote in borland.public.cpp.borlandcpp:

> 
> "Ed Mulroy [TeamB]" <dont_email_me@bitbuc.ket> wrote:
> >  string command("dir h*.txt");
> >  system(command.c_str());
> 
> Thanks for the help.  I tried the command but ran into two problems.
> 
> First, system does not respond to the cd command.
> string command("cd ..");
> system(command.c_str());
> 
> But GetCurrentDir() returns the same value before and after the system command.

The system does respond to the change directory command, it is just
that the result is not what you wanted or expected.  The system()
function causes a new instance of the command interpreter to be
launched.  That command interpreter processes the argument to the
change directory command and changes its current directory.  Then that
instance of the command interpreter exits.

In MS-DOS/Windows, as in UNIX/Linux, a child process changing its
current directory has no effect at all on the parent process (your
program calling system()) current directory.

If you want to change your program's current directory, you need to
use the proper MS-DOS or Windows system call, the system() function
can't do it for your.

> The system command does not always respond to the new text color.
> 
> textcolor(YELLOW);
> cprintf("dir");
> textcolor(LIGHTCYAN);
> cprintf("\r\n");
> system("dir");
> 
> The last command executes in the color YELLOW, but it should execute in the color LIGHTCYAN.
> 
> Thanks.

Don't know about this one.  What version of Borland compiler and what
version of DOS or Windows are you running it under?

-- 
Jack Klein
Home: http://JK-Technology.Com
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