Shell operations from C++ Post: 302900566

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Top Forums Shell Programming and Scripting Shell operations from C++ Post 302900566 by linuxUser_ on Wednesday 7th of May 2014 02:39:57 PM

05-07-2014

Registered User

Shell operations from C++

Hi everyone,

I need little help in shell operations from C++ program.
Here I furnish the details of problem:
1. Lets say my current working path is myWorkingPath.
2. In my working path I have list of name directories and each name directory has two more sub directories say A/B.
(now path to B will be pathB = myWorkingPath/name/A/B)
3. I have a executable (say run) in myWorkingPath directory, that i wanted to execute from B directory.
4. From C++ program I can do shell operations like mkdir, rm etc using system("mkdir NewDir"), system("rm file") etc., (these shell operations will done form myWorkingPath)
but unable to do some shell operations from pathB. How can I communicate pathB for system() operations?

lets say I have saved this path in pathB="/home/linuxUser/myWorkingPath/name/A/B". here name is a variable.

Code:

for(i=0;i<nameList.size(); i++){
pathB="/home/linuxUser/myWorkingPath"/nameList.name(i)/"A/B";
system("cd pathB"); // to goto that B directory
system("../../../run"); // to run the executable
}

I know this program is wrong but, may give you clear idea what i wanted to do.

can any one help me?

Regards,
linuxUser_

Last edited by linuxUser_; 05-07-2014 at 05:07 PM..

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LEARN ABOUT FREEBSD

pwd

PWD(1)							    BSD General Commands Manual 						    PWD(1)

NAME

     pwd -- return working directory name

SYNOPSIS

     pwd [-L | -P]

DESCRIPTION

     The pwd utility writes the absolute pathname of the current working directory to the standard output.

     Some shells may provide a builtin pwd command which is similar or identical to this utility.  Consult the builtin(1) manual page.

     The options are as follows:

     -L      Display the logical current working directory.

     -P      Display the physical current working directory (all symbolic links resolved).

     If no options are specified, the -P option is assumed.

ENVIRONMENT

     Environment variables used by pwd:

     PWD  Logical current working directory.

EXIT STATUS

     The pwd utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     builtin(1), cd(1), csh(1), sh(1), getcwd(3)

STANDARDS

     The pwd utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

BUGS

     In csh(1) the command dirs is always faster because it is built into that shell.  However, it can give a different answer in the rare case
     that the current directory or a containing directory was moved after the shell descended into it.

     The -L option does not work unless the PWD environment variable is exported by the shell.

BSD
								  April 12, 2003							       BSD

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