Subj : Re: How to execute a shell command
To   : borland.public.cpp.borlandcpp
From : "Siemel Naran" <SiemelNaran@att.net>
Date : Mon Feb 02 2004 06:55 pm

Jack Klein <jackklein@spamcop.net> wrote:
>On 1 Feb 2004 22:54:36 -0800, "Siemel Naran" 
>> "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.

Oops my other post didn't show up.

Is there a way to create a shell instance as a variable, so then it can remember it's state?  Like

Shell shell;
shell.system(command.c_str());
printf("%s", shell.GetCurrentDir()); // may change!


>> 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?

Windows ME running Borland C++ Builder 6 personal edition, build 10.161.

Thanks.

.