Very Simple Question - How to Start a Programme with C?

I am sure this is quite easy to do. I am trying to get an application I am writing in C to start a separate application, whenever it runs...
int main(void)
/etc/rc.d/moblock start
return 0;
Does anyone know how to do this?

Hrm.... I am getting these errors...
bash-3.2# gcc -o /usr/bin/karamblock /home/karam/Desktop/karamblock.c
/home/karam/Desktop/karamblock.c: In function 'main':
/home/karam/Desktop/karamblock.c:4: error: 'pwd' undeclared (first use in this function)
/home/karam/Desktop/karamblock.c:4: error: (Each undeclared identifier is reported only once
/home/karam/Desktop/karamblock.c:4: error: for each function it appears in.)
with this code...
#include <unistd.h>
int main(void) {
setuid(pwd->pw_uid);
system("/etc/rc.d/moblock start");
return 0;

Similar Messages

  • HT4753 I have a very simple question: how do I view where Lion has autosaved my current version to (without the convoluted route of using finder)? In days gone by i'd simply use the save as function to see where it was being saved.

    I have a very simple question: how do I view where Lion has autosaved my current version to (without the convoluted route of using finder)? In days gone by i'd simply use the save as function to see where it was being saved.

    It's actually even easier than using Save As to see the full path to the currently open document. Just do a "Secondary click" on the document title in its window's title bar.
    Like you, I relied upon Save As my whole life to check a file's location and considered it a must-have capability. Turns out it's even faster to use the single-click method to reveal the full path to the open document. It displays the entire path to the current document starting from the level of your Mac, and works for files stored on drives as well as iCloud.
    If you're not sure how to do a secondary click, go into System Preferences, select Trackpad, Point & Click to find the current preference for secondary click on your Mac. If you happen to have a mouse with more than one button, it's probably the right button. As a trackpad user, I check the box to "Click or tap with two fingers," so a simple two finger tap on the title of an open document reveals its full path. This feature actually has been around for a very long time.
    Note that this is not the same thing as the Autosave and Versions menu, which is exposed using a little drop down triangle to the right of the title. There is no visual clue for the presence of this feature - you just have to know it's there, probably because this feature goes all the way back to pre-OS X days.

  • Very simple question, how do you configure windows 8.1 to use a SF card as the default install location for software applications?

    Very simple question, how do you configure windows 8.1 to use a SD card / external drive as the default install location for software applications? Primarily interested in apps installed from the windows store. This should be available in the settings
    charm within the windows store. This must have been overlooked in the development of windows 8.1 or is a bug.
    Regards, Bill
    * update
    I've tried modifying this key and the path:
    “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Appx”
    http://answers.microsoft.com/en-us/windows/forum/windows_8-windows_store/how-do-you-install-apps-in-windows-8-from-the/c4fbe2a8-fd3d-41c1-b9a6-6f881eed374f
    Also tried using symlinks as detailed here:
    http://social.technet.microsoft.com/Forums/windows/en-US/8eee52c2-db0f-4032-8c72-7cd999e8b41a/windows-8-apps-installing-to-secondary-drive?forum=w8itprogeneral

    Here's some links I've used to try to figure this out:
    http://social.technet.microsoft.com/Forums/windows/en-US/2dfc0cd9-7d1b-41de-abce-e03fb6a5a383/metro-apps-not-working-in-windows-8-pro-x64-after-moving-users-and-programdata-folders?forum=w8itproinstall
    http://social.technet.microsoft.com/Forums/windows/en-US/8eee52c2-db0f-4032-8c72-7cd999e8b41a/windows-8-apps-installing-to-secondary-drive?forum=w8itprogeneral
    http://social.technet.microsoft.com/Forums/windows/de-DE/f5e33ac9-beab-4b99-b3ca-7cb5e6f415e4/how-do-you-change-metro-apps-default-install-location?forum=w8itprogeneral
    Regards, Bill
    The registry method does not work with 8.1.  I found this out the hard way.  Doing it on 8.1 will leave you reinstalling the OS if you didn't do a SRP beforehand.

  • Very simple question-how to fill a shape I draw with color

    hi. I am new to photoshop and having a lot of trouble selecting any shape that I draw. I am trying to do a tutorial that involves filling a canvas with gray, then drawing a smaller white rectangle inside of the larger gray canvas/rectangle. (I did not forget to unlock the background).
    My question: how do i select and fill (with white) the second rectangle I draw on top of the larger gray rectangle???
    In general, I cannot figure out how to select and/or fill any shape I draw using the rectangle tool. Likewise, the marque shape tools are no help as I cannot seem to draw a marque on my gray rectangle in order to select it and fill it with a white fill. I have also tried to use a "fill layer."
    I am almost certain that something is wrong with my computer(I reset the settings), but then again I have not used photoshop in over a year. Any help  will be greatly appreciated.

    The Rectangle Tool sgould create a Work Path, Shape Layer or Fill Pixels according to the Settings in the Options Bar.
    The Rectangular Marquee Tool should create a Selection, which you could Edit > Fill or use as a Layer Mask for a Solid Color Layer.
    Could you please post a screenshot with the pertinent Panels visible?

  • A very simple question: how to obtain the mail server name?

    In our JSP application, at one point an email will be sent to notify one event. Currently, that is done by using the html tag: mailto. To have more control on the email in tems of context format (a bad layout right now) and others. I would like to have it processed at servlet by using the JavaMail API, so that it have a nice format and have the sender's email address right in case email client is not installed in the machine where the browser in. The JavaMail API is straight forward. The question is how to obtain the mail server name, and the sender's email address if there is one?
    Thanks.
    v.

    How to obtain the mail server's name? It's your server, you should know its name. Or if it isn't your server, you should ask the administrator for its name. Point is, you need to decide in advance what server you are going to use and hard-code its name into the program or into a properties file.
    And how to obtain the client's e-mail address? You have to ask the client, probably by putting a box in the HTML and asking them to type it.

  • Very Simple Question - How to change to lower case in Comic Book Theme

    I have a site I have created in iWeb08 and used the Comic Book theme but I cannot change the text on the main page to lower case. I have copied and pasted text in and its always UPPER CASE. I have tried changing the font to no avail. I made a new blank page and typed in and again its UPPER CASE. I can change the font to something else (eg Arial) but whatever I type - its in upper case. Can this be changed. It is OK on other themes. Many thanks.

    Bingo. Many thanks. Did not spot that there.
    Regards.
    Ben

  • VERY SIMPLE QUESTION REGARDING UML DIAGRAMS IN JDEVELOPER

    Hello there,
    I have a very simple question. I want to know how I can convert a class diagram that I have created in jdeveloper into a jpg image so I can put in word. When I try exporting it only has the uml to xmi option
    Does anyone have a suggestion?

    Hi,
    Right mouse click on the class diagram,
    than click publish diagram on the context menu
    and save as jpg where ever you want...
    Boris

  • A very simple question..Very Urgent

    HI,
    I have a very simple question.I am able to set up the client authentication as well as server authentication. Now do i need to authenticate (both server as well as client auth.) for every request i send to the server on https...i think it should be like that it should authenticate only for the first time and for the next upcoming requests in same session should not require any server or client authentication.. i think as it happens in browsers..
    what is the fact actually??..can somebody put some light...right now in my case it is authenticating for every requests..
    This is what i have done..
    /****constructor part********/
    // and tm are arrays of keymanagers and trustmanagers for client keystore and truststore
    sslContext.init(km, tm, null);
    HttpsURLConnection.setDefaultSSLSocketFactory(ssf);
    HttpsURLConnection.setDefaultHostnameVerifier(new MYHostNameVerifier());
    /****Method to send the request and response*********/
    urlConn = (HttpsURLConnection)url.openConnection();
    urlConn.setDoInput(true);
    urlConn.setDoOutput(true);
    OutputStream os = urlConn.getOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(os);
    oos.writeObject(someobject);
    oos.flush();
    InputStream is1 = urlConn.getInputStream();
    ObjectInputStream ois = new ObjectInputStream(is1);
    SomeObject retObj = null;
    retObj = (SomeObject)ois.readObject();
    ois.close();
    System.out.println("Get String>>>>> "+retObj.getString());
    I am creating the object of this class..and calling the method again and again for sending requests and response..so i think handshake everytime i call the method...what i want is that handshake should happen for the first time and for the next requests no handshake or certificates should be checked or processed..
    is it possible ..how..what i need to do for that..
    please help me in this..
    Akhil Nagpal

    Hi,
    how could I achieve SSL Session Resumption using HttpsURLConnection.
    Thanks.

  • This is a very simple question,but I don't know.Please me.Thank you!

    I am a Chinese student in a university.I have a very simple question to ask.
    I have writed a EJB module,and I have deployed to Weblogic8.1 successfully.
    1.Now I want to write a client program.Is it necessary that the client program is packaged in the EJB package.For example ,the EJB package is Beans,is "package Beans " or "import Beans.*" necessary in my client program.
    2.If I only know the EJB interfaces,that means the EJB module is writed by other programer.I want to know how I can write the client program.How can I call EJB module's method writed by other programer.Could you give me a simple example?
    Thank you very much.

    I have writed a EJB module,and I have deployed to
    Weblogic8.1 successfully.:-)
    1.Now I want to write a client program.Is it
    necessary that the client program is packaged in the
    EJB package.For example ,the EJB package is Beans,is
    "package Beans " or "import Beans.*" necessary in my
    client program.You need not package your client with the EJB. It can be a JSP/servlet or a stand-alone application.
    2.If I only know the EJB interfaces,that means the
    EJB module is writed by other programer.I want to
    know how I can write the client program.How can I
    call EJB module's method writed by other
    programer.Could you give me a simple example?
    import java.util.*;
    import javax.naming.*;
    import javax.rmi.PortableRemoteObject;
    import examples.*;
    class TestEJBHello {
        public static void main(String[] args) {
            Context context   = null;
            Object object     = null;
            // Hashtable for environment properties.
            Hashtable env = new Hashtable();
            env.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
            env.put(Context.PROVIDER_URL, "t3://localhost:7001");
            HelloHome home            = null;
            HelloWorld hello          = null;
            try {
                context     = new InitialContext(env);
                object      = context.lookup("HelloWorldTest");
                System.out.println(" JNDI Looked up >>> " +object);
                home        = (HelloHome)PortableRemoteObject.narrow(object, HelloHome.class);
                hello       = home.create();
                System.out.println(hello.hello());
            } catch(Exception e) {
                e.printStackTrace();
            } finally {
                close(context);        // Closes the initial context.
        private static void close(Context context) {
            try {
                context.close();
                System.out.println("*** Context closed. ***");
            } catch (NamingException namingException) {
                namingException.printStackTrace();
            } catch(Exception exception) {
                exception.printStackTrace();
    }Here's a sample client app code I use for a HelloWorld EJB. You need to have a EJB client JAR containing the home and remote interfaces in the classpath during compile time and runtime.
    x

  • A very very very simple question

    Hi guys,
    I have a very simple question and standard but I cant find anywhere...
    I have two dateTime variables, i need to calculate difference between this dates in days, thats it.
    I tried all functions and tried without success a Java Embed task but I couldnt retrieve this objects as java.util.Date so I couldnt calculate exactly the difference in days like this pure java code:
    (dataVencimento.getTime() - dataReferencia.getTime()) / 86400000L)
    can you help me this?

    Hi Jose
    Just see if these alternate approaches works. I know there may be lot like this and you may be lucky to find out simple out of box solution itself. If you want to solve this issue and move ahead, gives these approaches a shot.
    1. Create a very simple standalone WebService that takes 2 input date elements (can be of Date type or String type. If string type, convert to date in your java code). Create a simple operation like getDaysBetween(firstDate, secondDate). In the generated webservice impl class, use the java code apis (refer earlier link for usage), and get the difference. Return this value. NOW, invoke this WebService in your BPEL Process, and pass your 2 inputs (if the bpel payload elemetns are date object or string objects of date), and get output, and then use this output in your continuing bpel process.
    2. This approach, I did a long back. When we insert any expression using XPath, in that editor window on bottom right side, we see many categories and for each category we see list of functions we can use, like for String, we can use concat etc. I vaguely remember reading somewhere, that we can add our own custom functions also in this section. So explore this direction and see if you can add your own function and then use that fucntion with your 2 input dates.
    I have not given solution to your problem, but may be these directions can help you move ahead. Or something along these lines.
    Thanks
    Ravi Jegga

  • Simple question - How do you make an onchange event occur in a select list

    Simple question - How do you make an onchange event occur in a select list to fire a process?
    Thanks

    1) Using ApEx Selec list on Submit Item.
    You will create a PL/SQL Process after Submit. -> Conditional Type Request = Expression1. -> Expression1 is the name of your Select List. Process Source - > Procedure you like. For example depending of your select List value you will add rows in different tables.
    2) Javascript This example will change a System parameter value when changed
    <select id="P3_SUBSYSTEM" onchange="location.href='f?p=101:3:2164422329953284::NO::P3_SUBSYSTEM:'+this.options[selectedIndex].value;" size="1" name="p_t21">

  • New comer ask 2 simple questions:how to set the use of the right click of

    New comer ask 2 simple questions:how to set the use of the right click of your mouse?
    I don't know why when i click the right button of my mouse in logic, sometimes it's the same funcion as my left one, some times it's the same function that opens the tool menu....But in MacOSX,it's all okay.Just the weired thing in logic ,please help
    2.is there any kind of filter in Score? I mean, in midi track I have a C1 note, and I don't want the C1 note shown in my score, I want every note show which are above C2, like a filter. I think this is helpful dealling with some keyswich things,how can we do that?

    In Preferences -> Global -> Editing you can choose weather right click is assignable or opens the tools box.
    Not to sure about the score dude

  • Can anyone answer a very simple question for me ive heard the apple was giving a free iphone 4 or 4s bumper away is there any truth to that?

    can anyone answer a very simple question for me ive heard the apple was giving away iphone 4 or 4s bumpers is there any truth to that?

    Not any more, no. There was a free bumper program back when the iPhone 4 originally came out. It has long since expired.

  • How to start java applet with netbeans 6.1

    hey,
    I want to learn how to start java applet (with database) with netbeans.. I'm new to java...can you show me how can i start..if you have any doc about it can you send it to me..thank you..:)

    You really should be asking this NetBeans question at the NB site - these forums are for Java language topics, not NB support.
    [http://www.netbeans.org/kb/61/web/applets.html]
    Almost any NB question you have can be answered by either the NB web documentation or the NB program's Help.

  • How to start a application with a login window?

    hi there
    does anyone have any idea on how to start an application with a login window? a login window is the first frame or window to be displayed when an application starts running. and only correct login id and password have been entered the real application will start. any sample out there? thank you.

    You can start a new thread by making a thread object and passing it an implementation of a runnable object. Runnable has just one method, public void run(), this is was gets executed in a second thread. perhaps the code you would use would look something like this.
    <code>
    // set up thread for login window
    new Thread(new Runnable() {
    public void run() {
    // construct your login window here
    // when you are done processing the
    // password....
    if(goodPassword) {
    authorized = true; // a global variable
    notifyAll(); // don't forget this
    else {
    System.exit(42);
    }).start();
    // control does not stop this code gets executed while
    // the above thread is running.
    // Set up main program here. This is done in the
    // backround.
    while(!authorized) {
    synchronized(this)
    { wait(50); }
    // now when the user logs in this frame pops
    // up real quick.
    myFrame.setVisible(true);
    </code>
    Hope you can figure it out.. good luck :)

Maybe you are looking for

  • Reading file

    hello .. can anyone help me.. my problem begin like this.. my program is about reading DNA sequence, which the file name is <<" hxk_yeast.fasta ">> before running my program , i've compile all classes inside my program so my ...question is : should i

  • How to get the location of the caret?

    Hello I want to get the location of the caret. Not the offset of the document. I have tried the Caret.getMagicCaretPosition(), but I think it gives me a point in viewport. How can I get the absoult location of the caret(the location on screen ,not in

  • Can any one tell me how to get the Cell ID from the nokia�s mobile stations

    Hi All: Im trying to get the gsm cell information from nokia�s cell phones, but the properties "phone.cid", "phone.lai", "phone.mcc" and the "phone.mnc" not works, every time the results are null. Could any one help me? Please contact me at [email pr

  • BO XI R3.1 dashboards with Xcelsius suddenly giving error

    We have BO XI R3.1 (Product: 12.1.0) being used in our organization. Everything was working fine till few hours ago. Suddenly, all the Dashboards having Xcelsius as default viewer started giving an error message 'Failed to get the document informatio

  • Remove music that is unauthorized

    is there a way to remove music that I don't have authorization to anymore? The short story is I had music in my library that a friend provided me log in info to so I had access. we lost touch and I had to get a new computer and reinstall iTunes. I no