I'm trying to make a program to simulate a parabolic movement, so i've added 2 entries, one for the initial velocity and other for the angle, anyway you probably don't care about that xD what i want is to take the number entered in the entry and put it in a variable to do the math, and then show everything in a dialog or something. how do i do that?
View 3 RepliesI have to add a new interrupt framework to the kernel (INT 81h). To add the interface descriptor to INT 81h I have to write to the IDT entry 81h. There are some functions of the kernel that can do this task but they can not be used in a module. So I will now do a patch to the kernel and don't know where to start.
Where is INT 80h interface descriptor written to the IDT? - So I could write it maybe the same way in the same function. Which GTD entry is used to write to the IDT (1, 2, 3 or ...) ? - So I can do some debugging.
I created a class which has to return an array. My problem is I need to return 3 entries per record for example:
Code:
array(
"2009-06-13", "John", "Doe";
"2009-06-13", "Paul", "Simon";
"2009-06-12", "Frank", "Herbert";
);
Can this be done? What is the syntax? Where is the documentation? If this can't be done, How would you return this to a class without using a DB?
I have a kernel module program which is used to create a entry in the proc file system. I have to read and write values in the entry. Its taken from a online tutorial stuff.how to write the value to the proc entry in the program ?
View 1 Replies View RelatedI've searched the web for quite a while and cannot seem to find a way to add a gtk.Entry() to a toolbar via toolbar.insert().
I currently have this:
Code:
Which in turn spits out "Gtk.Toolbar.insert() argument 1 must be gtk.ToolItem, not gtk.Entry"
How would I do this correctly?
I need to create and access a very large number of directories (and by large I mean millions). Each directory's name consists only of numbers, which are incremented every time a new directory is created (so there will be directory 1, 2, and so on).Of course I could just dump all these directories under the same parent directory, but I reckon I would run into filesystem limits. Moreover, I presume that entry lookup is not a O(1) operation, which means that lookup does not scale well.
One solution is to use some sort of prefix tree for storing the data. In this scheme, the data for directory "1234" would actually be stored in "/1/2/3/4".This solution has the advantage that each subtree never has more than 10 entries, but the disadvantage of requiring as many individual lookups as the length of the path.There are also intermediate solutions: using a maximum of 100 entries per directory, "1234" would become "/12/34", per example.In order to choose the best scheme, I must know more about the scalability of directory lookup under Linux. What's the maximum reasonable number of entries for a directory before lookup becomes too slow? Does someone know exactly what are the limitations of the algorithm used for directory lookup?
i want to make program that processing entry in log on real time... I have try to pass "tail -f -n 1 /var/log/messages" command from .runtime().exec and process the output,, description of the algo is like this
-passed to exec()
-read output
-if not same as previous value procces it
but sometimes it loose some entry to procces, maybe it occur when proccesing another entry is added by system...
I recently started shell programming and my task now is to do a menu display.Currently i am stuck whereby user will input both title and author and it will delete it.
Do i have to use sed command?
I have set up a MySQL database which has only three fields for user-name, password and index number. But there is a LOT of data (thousands of columns) which would take too long to enter manually. I'm sure MySQL must have a file format whereby a single large file containing different data types can be successfully automatically imported and the various data elements distributed to their intended fields. Does anyone know which characters MySQL uses as field seperators for this formatting of data, or is there a program already written which can take raw data and organize it into a SQL compatible file?
View 8 Replies View RelatedI was hoping to get some pointers on how to rename files based on database entry. I got hundreds of thousands of files that has GUID name assigned to it. only way to find out the file name is to look up the database table. Its obvious that this is not efficient. I couldn't find any tutorials on how to do this. Please point me to right direction. A starting point would be very helpful.
View 1 Replies View RelatedI am writing a sample nasm program via terminal.It's a basic one ,it only demonstrates the usage of the zero and sign flags and print relevant message to the output. Here are the code:
Code:
SECTION .data; data section
errMsg:db "Error !",10
errLen:equ $-errMsg
zeroMsg: db "Zero flag",10
zeroLen: equ $-zeroMsg
[Code]....
This is an odd one. I have a C program that calls umount to unmount a volume. A simplified case looks like this:
Code: int main()
{
int rc = umount2("/v0", MNT_FORCE);
if (rc != 0)
{
printf("Unable to unmount volume /v0, err='%s'", strerror(errno));
code....
I also discovered the reverse effect with calling mount() in code. When I make a call like Code: mount(drive, volume, "xfs", MS_NOATIME, NULL); the indicated drive is mounted since I can access the files as expected, but df doesn't show the drive has been mounted.
Why is my C code behaving this way? What do the mount/umount commands do when run from the command line that I'm not doing in my C code?
Ok, first is it possible to take a program I wrote and make it to be a entry in the right menu of a file browser program.
Also, can this happen if the program is developed in Java?
OpenSuSE 11.4
Kde 4
Dolphin(file browser)
As i am new to C++ i couldn't figure out how to input a file and make some change on the file and produce a output file. like this problem i have is.
"Program that processes an input file and produces an output file. The input file will contain lines of data, each containing two floating point numbers. The lines of the output file should contain the two numbers read and their average (with a '$' sign and 2 places after the decimal point)."
I've done a little program, it's the snake game. I use an X window to show the snake and all that but the input is taken from the terminal. That means that what I have to do to play the game is open it with the terminal and then the game opens but then I have to go to the terminal again to move the snake. if I open the game from the GUI I can't do anything because it doesn't take my directions. What do I have to do in order to get the program to have a connection with my keyboard? I use getchar() to get the input, maybe there is something else?
View 9 Replies View RelatedDoes diff not like arrays? How do achieve the following?
Code:
stuart@stuart:~/music transfer$ diff file1.txt file2.txt
1c1
< bonkers_in_phoenix.mp3
[code]....
what i am trying to do is to allow the user to key in data such as "23.23" or "24" , as it is the price of certain objectsHow am i able to design a check which will allow me to prevent users from typing in input such as "ab.21" or "rfrr" as this field is purely a numerical field. The problem i am facing is i tried using this search code.
Code:
echo "read this"
read this
[code]....
right now i am writing bash script for simple everyday todo tasks.script consisit of two files, fisrt is just script (which can delete/append /clear) and second one is todolist.txt which stores my notes.I am litlebit confused about sed!!for example, If my todolist.txt have these lines:
- Writing my Homework
- take my girlfriend to launch
- Take a break
How can sed take my input $@ and delete all line with name "Homework"..i trayed with many sed combination like:
Code:
sed s/$@//g
sed 'd/$@/'
and many more combination with ""/'' or bracket but nothing helped
I need a way to use serial input such as through an Arduino in Debian scripts, in any usable language.
View 2 Replies View RelatedI've written a bash script that allows a user to input a directory location to find out the size of the directory. However, if the user inputs a directory and finds its size then inputs another directory then wants to quit, the script asks the user numerous times if he wants to quit!! The script won't exit until the number of times the user looks at a directory is reached! What gives?
Here's the script:
Code:
I am trying to learn C++.I implemented a simple archive program, and I am in a situation in which the user is prompted by a menu to make a choice.So I have some cout instruction to illustrate the possible choices and then
int choice;
cin>>choice;
and everything works fine.I introduced this code in a "while" loop that checks wether the choice made by the user is valid or not:
bool check=true;
int choice;
while(check)
{
cin>>choice;
if(the choice is valid) {...;check=false}
else cout<<"please make an other choice"
}
What is happening is that if by mistake the user introduces a character in place of a number, the loop repeats indefinitely because the program, when it get to the "cin" instruction, does not pauses to wait for a new input.
I would like to create a small C tool. I encounter a problem of how to make a function to check an input chars contains numbers (started from the second element).
Some samples:
char *mychar= "a3547"; (The result of function checking this is true)
char *another_char = "t6548"; (The result of function checking this is true)
char *next_char = "appl3"; (The result of function checking this is false)
char *new_char = "b1aa3"; (The result of function checking this is false)
I am creating a 15 integer array which is input from the user and outputted for the.
Ex.
Enter the array values: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Your values are: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Code:
Write a program that requires the user to input the name of a file as an argument. If the user fails to include one argument it should make use of a thread that handles a signal. The signal handler should tells the user Incorrect number of arguments and then calls the terminate signal on the process.
If the numbers of arguments are correct then the program should allocate memory space to the file (5MB) and create a child process that requests the user for a character that it should send to the parent. The child should keep request for data until the user keys in the character O. During each request it should pause for 10 seconds, send the character to the parent and then requesting again for another character.
The parent should get the character from the child. Do not make the parent wait for the child to finish requesting for data. Make use of pipes to facilitate communication between the parent and the child. A second child should be created to read and display data from the file. Make use of any appropriate Inter Process Communication technique to ensure that the second child and the parent do not access the file simultaneously (Mutual exclusion).
i have to write a program which checks the information inside a text file to make sure it is all integers and then convert the integers to roman Numerals. My program seems to have a bit of a problem and im not sure where exactly the problem is....
Code:
#include<stdlib.h>
#include<string>
[code]....
While making a shell ,there is the following problem Im facing:
I am expecting the user to enter commands in the following format :
I am to separate these and the output of ls -l should be given as input to grep and the output of both to more.
But I am allowed (by our instructor) to use dup/dup2 or any other command(but not pipe or tees).
How to connect the file descriptors after successful execution of each command?
I started to run a C++ my program in Linux and I don't know how to test my program that works fine with a text file. This is a project for my uni and to explain more clear, My program is a sample database for modify or add and search and it read data from a binary file and also write into a binary file. I have got an input from my lecture and she said after compiling in Linux I must write:
1-to compile:
Code:
g++ (files with cpp)
2-to see the output:
Code:
./a.out
3-to test with input:
Code:
./a.out < input.txt >
My problem is in step three. What I must write in the command part after" step2" to see the output?
I have a C program that may finish in seconds or weeks depending on the data. For the longer jobs I want to be able to press a key and get an intermediate result printed.
View 14 Replies View RelatedI have this piece of code in my shell script file:
Code:
useradd $UserName; passwd <& $password
I am not able to perform Input Redirection while setting password programatically- without any user intervention.
I think there is a way to do it, but it is just getting slipped from my mind at the moment.
I want to select the branch based on the INPUT. Here is the program segment which uses the case statement.
case $INPUT in
1)branch="Computer Science";;
2)branch ="Electrical";;
3)branch = "Mechanical";;
4)branch= "Aerospace";;
esac
When I run this script, I am getting an error, Electrical command not found?