create a directory in c++

crapodino · 01-31-2006, 08:39 PM

Hi: I use c++ with kdevelope in suse 10. I need to create folders (directories) and i couldn't find how to do it. I tried this:

system("md /home/mariano/tpmotor/src/new_folder")
or
system("md new_folder")

but it didn't work

how can i do it ??

thanks

xhi · 01-31-2006, 09:01 PM

Code:

#include <cstdlib>
...
system("mkdir a_new_dir");

hth

spooon · 01-31-2006, 09:03 PM

i don't think there is "md"; use "mkdir"

crapodino · 01-31-2006, 09:10 PM

yessssssssssssss

thank you very much. it was mkdir.

as in a command line was md i thoungth that it was in c++ too

thanks

spooon · 01-31-2006, 09:54 PM

No, you are precisely running things on the command line; but there is no command called "md" in Unix (perhaps you or your admin alias'ed it in bash or something).

kshkid · 01-31-2006, 10:00 PM

Quote:

Originally Posted by spooon

No, you are precisely running things on the command line; but there is no command called "md" in Unix (perhaps you or your admin alias'ed it in bash or something).

No, there is a command called md in unix (preferably starting from solaris 2.4).
Its a pseduo device driver (generic - basically)supporting all the disk devices on solaris.

xhi · 01-31-2006, 10:08 PM

Quote:

No, you are precisely running things on the command line; but there is no command called "md" in Unix (perhaps you or your admin alias'ed it in bash or something).

from `man md`
md - Multiple Device driver aka Linux Software Raid

reagardless, it doesnt make directories

Stack · 01-31-2006, 11:31 PM

Here is another arguably better way of doing what you want:
http://www.opengroup.org/onlinepubs/...ons/mkdir.html

crapodino · 02-01-2006, 07:55 PM

now i have another problem, with rmdir i can't erase a directory if it isn't empty. how can i erase a directory wich is not empy ? i don't want to erase element by element. instead, i would like to erase the whole folder. i search in man but it doesnt' say anything

thanks

xhi · 02-01-2006, 07:58 PM

Quote:

Originally Posted by crapodino

now i have another problem, with rmdir i can't erase a directory if it isn't empty. how can i erase a directory wich is not empy ? i don't want to erase element by element. instead, i would like to erase the whole folder. i search in man but it doesnt' say anything

thanks

from `man rmdir`
--ignore-fail-on-non-empty
Normally rmdir will refuse to remove a directory that is not empty. This option causes rmdir to ignore the failure to remove a directory, if that
failure is due to the directory being non-empty. (New in fileutils-4.0.)

i typically use `rm -r` as it is shorter and does same thing

spooon · 02-01-2006, 08:09 PM

Quote:

Originally Posted by xhi

from `man rmdir`
--ignore-fail-on-non-empty
Normally rmdir will refuse to remove a directory that is not empty. This option causes rmdir to ignore the failure to remove a directory, if that
failure is due to the directory being non-empty. (New in fileutils-4.0.)

Doesn't this just not remove the directory if it's not empty?

xhi · 02-01-2006, 08:18 PM

Spooon,
i stand corrected.. it does just ignore it by not doing anything.. not ignore the fact that it is not empty and delete it.. one of those options seen but not used.. and apparently misunderstood..

imo, `rm -r` would be the best way to go here..

xhi · 02-01-2006, 08:23 PM

btw
I would think a param such as..

Code:

--silent-fail-on-non-empty

would be preferred, and much more fitting than the current rather obscure

Code:

--ignore-fail-on-non-empty

as ignore implies that it is ignoring the failure and is continuing with the removal. where silent or somthing similar would clearly say it is still failing but is silently doing so..