What is the use of These Symbols ??
Recently My Friend Mail me a Program Which Contain Some symbols. i never saw and use them Before..
these are "/d /t /v /f". Actually in a line he Called system() then he use these Symbols in it.. Now here I'm stuck bcoz I never use them before.
So someone Please help me that what is the use of these symbols "/d /t /v /f". And are there many more ??
THANKS :-)
If they were being passed in a string to system, then they were command line switches for whatever program was listed before them. They don't mean anything in C.
Quzah.
Hope is the first step on the road to disappointment.
Actually the code is used to do Some Changes in Window's registry.. it is as Follows..
Now can anyone help me out..Code:system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f");
If I understand you right, those are options for the operating system command he's passing in system(" ");
For instance, in Windows, you can use options like this to show a dir *.*, but include only the directories, or change the options, and show only the files, or show the files in a column format, or sorted by date, etc.
Open a terminal window, and type in the system command, then 1 space then /?, and you'll see the help screen for that command. On Linux, refer to their system help.
Edit: I don't know the command line switches for the registry, but a Google search should tell you what they are, very quickly.
Last edited by Adak; 03-05-2011 at 10:59 PM.
I already answered you. They are command line switches to reg. I don't care if you believe me or not. Everyone else who shows up and bothers replying to you is going to tell you the exact same thing.
They have absolutely no meaning in C. They have nothing to do with C. Open up your command prompt and type:
reg add HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/USBSTOR /v Start /t REGWORD_ /d 4 /f
And it will have the same effect.
Quzah.
Hope is the first step on the road to disappointment.
THANKS Adak. and Quzah !! :-)
You're welcome, but be careful editing a registry!
He's disabling the usbstor service atOriginally Posted by Gaurav Singh
hkey_local_machine\system\currentcontrolset\servic es\usbstor
Open a command shell and type in REG /? and you'll see what he's doing.
Setting the start value of a service to 4 disables it.
Not exactly the smartest thing to do since it will disable his flash and disk drives connected to his USB ports...
Yeah... it will disable his USB ports...
So I'm guessing he probably doesn't want to try that.
@OP: What he said.
If you understand what you're doing, you're not learning anything.
