Programming :: Xterm/konsole "-e" Changes Control Char Interpretations?
Oct 15, 2009
starting apps with xterm "-e" seems to change control chars. I want this to not happen, but I have no idea how to stop it. for example:
xterm -e ssh localhost gdb
ctrl-x ctrl-a
I see see the character sequence ^X^A apear in the gdb session. However gdb should interpret those characters and go into tui mode. It doesn't. If I instead run each thing in succession (without -e)
xterm
ssh localhost
gdb
ctrl-x ctrl-a
it works as it should. The same thing happens to konsole so it's not just xterm. Can you help me understand what's happening and how to fix? I need to use "-e" method.
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Jan 26, 2009
I want to know if it is possible for xterm to have tabs, just like konsole in kde?Also, is it possible to scroll line by line (just like Shift+Up/Shift+Down)?
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Jan 1, 2010
I'd try here first, since I am running slackware, though it's a firefox problem ... To verify bug, just go into a KDE konsole xterm, and do
[13:35 ~]$ mkdir ~/ffbug
[13:35 ~]$ touch ~/ffbug/_$'31'_
[13:35 ~]$ firefox file://$(echo ~)/ffbug &
(This assumes you didn't already have a ~/ffbug directory, and you have firefox 3.5.6 installed -- the prior firefox id not have this problem) What you will probably see is firefox trying to display a listing of the ~/ffbug directory, but instead showing an error message: XML Parsing Error: not well-formed. I posted this in the mozillazine forum, where it got read 20 times, but no response.
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Mar 4, 2010
m getting the following error when trying to compile:Quote:
$ make
g++ -march=athlon64 -O2 -pipe -fomit-frame-pointer -msse3 -c -D_GNU_SOURCE -DPLUGIN_NAME_I18N='"undelete"' -DHAVE_SVDRP -I../../../include undelete.c
[code]...
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Nov 4, 2010
Programming in C.I have two char arrays.char buf1[1024];char buf2[1024];Aren't buf1 and buf2 also pointers?I read in 1024 bytes into buf1 which contain about 300 bytes of characters with newlines. The data is basically a few English sentences. I'm trying to scan buf1 for newlines and then stop at the 1st newline and copy the rest of the data from that 1st newline into buf2.So I run a for loop to look for that new line.
Code:
for(i=0; i<1024;i++) {
if((strcmp(&buf1[i], "
[code]...
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Jul 9, 2010
I am having trouble with the following exception class.
Code:
/**Standard Exception
*
*@description
*@update
*@changes
[code]....
Line 43 points at the snprintf() command.I think the error has to do with the function being virtual and the const after the function definition, however although I have been looking really hard I have not being able to find the reason nor the solution to the problem.
One workaround that I know is moving the block of source withing the virtual function, in the constructor, however having read around (boost library exceptions tutorials) it specifically said that formating of errors messages should not take place withing the construction of objects because we are risking throwing an exceptions and messing up the flow order.
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Feb 14, 2011
i define variable of type char (range -128 to 127). when i tried to print the value after assigning a -ve value to it it displaying a +ve value of that -ve value(256+value).
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Jul 5, 2011
With this I may remove the last emtpy char which is not visible, coming from net, windows, ...
Code:
echo "$mystringwindowsorotherwithemptylastchar" |sed s/.$//
However if there are not then it makes a problem and delete effectively an existing char.
Code:
echo "klklj" |sed s/.$//
klkl
Anyone would have a solution for SH?
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Aug 8, 2011
Just had a weird problem in konsole at the command line. Some of my keys are not recognized as if they are not being pushed. They work fine in other applications and work fine if I push the Shift key with it and capitalize the letter. Some of the keys are the c, g, r, w, 3, 8,and 9. C, G, R, W, #, *, and ( all work so I do not believe it is hardware as I am using this computer to type this message. It is just at the command line. I don't know what I did to make this happen or how to fix it. I am using openSUSE 11.3 with the KDE 4.4.4 release 3. I tried reinstalling xterm and konsole from yast but it did not fix it.
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Mar 4, 2010
is it possible to convert a variable from char * to unsigned char ?
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Aug 2, 2010
For some reason my gnome-terminal is starting in / when it should be ~ I have checked /etc/profile, ~/.bashrc and /etc/passwd and everything seems fine as far as i can tell Konsole and xterm are starting up with the working dir to my home dir (as set by /etc/passwd) But im at a loss to see where gnome-terminal is starting in / if i enter cd with no argumants in gnome-terminal it is switching to ~ fine, so i dont think its mistaking my home dir for /
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May 29, 2010
I've never programed shell scripting.
Code goes like so:
I simply want to read a file "data.txt" line by line Then char by char and add them into a result var. The file is supossed to always contain numeric values
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Jan 6, 2010
I've modified a program to show * instead of letters when typing a password. I'm trying to make it so that when pressing backspace a * will be removed.Here's a rough example. The problem is that when trying to do this in the real program,' is not recognized as backspace.
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Jul 16, 2011
I'm writing the Diffie-Hellman key exchange system using GMP to handle big integers. For the most part, everything works. I can convert the string to mpz_t, set up the keys and everything, and encrypt it fine. Its the decrypting I'm having issues with. What I'm using is mpz_xor() for both. To encrypt I'm doing mpz_xor(buffer, mpz_of_text, secret_key), and to decrypt I'm doing mpz_xor(buffer, mpz_of_cipher, secret_key).
For one character, it semi-works...it'll decrypt it fine, but it'll return it as it's ASCII value (i.e.: if I encrypt "A", it'll decrypt it as 65). Which, I can easily just do sprintf(decrypted_buffer, "%c", 65) for example and be fine. But, when I'm sending text bigger than one character, the encryption for AB gives me something like 1061043 after running the decrypting xor on it.
Has anyone ever done this before or can point me in some directions? Perhaps other algorithms to try? I know XOR isn't the most secure encryption method to use, but at the time I wasn't sure what else to use. I'm really just having a hard time trying to convert a mpz_t to a character string. I've looked at mpz_get_str() and it works before running encryption (i.e.: using mpz_set_str() to create a mpz of a string, then calling mpz_get_str() to change it back). Maybe my XOR method is wrong? Here's the code I'm using:
Code:
/**
* str2mpz()
* b The current buffer of text to convert [in]
* m The mpz_t variable to store converted text [out]
[code]....
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Jan 27, 2011
I have a char*[] array:
Code:
char* myarray[] = {"Hello", "there!", "LQ"};
and I wish to use/ write a function to find the number of elements in myarray (in this case, its 3).
*equivalent of .NET's array.size() that returns number of elements in array
How do I achieve it?
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Apr 26, 2010
Below I've presented the declaration, definition and the calling method of a function w.r.t pass by reference:
Declaration
Code:
void getUnpackedMsg (unsigned char &data, unsigned int numberOfBits);
Definition
line 278: Shown in RED
Code:
void packedMessage :: getUnpackedMsg (unsigned char &emptyArray, unsigned int numberOfBits)
{
...
...
printf ("
[code].....
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Jul 18, 2010
What could be a command to erase from the cursor up to the first non-blank char in vi (or vim)?
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Jun 19, 2010
I am trying to simulate a shell. So what I do is checking of having the parameters from standard input, suc as "/bin/ls -l /home/france/Documents", and then passing them to function execute, which at some point calls execvp(argv[0],argv)The problem is that I don't succeed in using these arguments, while if I call execvp(paramList[0],paramList) it works!!!! Where paramList is exactly what I would put on standard input, but defined statically.
Code:
#include<unistd.h>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
[code].....
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Oct 17, 2010
I am a dummy in C programming. I have a problem with copying the array of 64 elements of unsigned char to array of 8 element of uint64_t. For example:
unsigned char p[64]
uint64_t Data[8];
memcpy (&Data, &p, 64);
I am not sure if it is right. Please help me. Thanks a lot.Moreover, do both p and Data have 64 bytes?
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Mar 6, 2011
This works for "char" but i need "char*",how do I do it?
Code:
char* tk = (char*) calloc(ctk+1,sizeof(char*));
Error when I use it:
Code:
error: invalid conversion from har* to har
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Mar 19, 2010
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)
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Jul 15, 2010
Can anyone please suggest me how can we convert a wide char data in linux which is of 32 bit to a 16bit data. I have a file which has 16bit binary data? Could any one please give me ideas.
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Jan 19, 2010
How to remove alternate char from file using shell script? If the file content is "1234567890" the output file should be "24680".
sed 's/(.)(.)/2/g' filename
Now there may be small modification to generate two alternate byte, what it should be? If the file content is "1234567890" the output file should be "125689".
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Sep 1, 2009
I have the following path wher i want to replace forward slashes with back slashes using sed path=/temp/file.tar
I am using the following but it's not working.
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Jun 9, 2010
I'm writing a code to get the index of the last occurrence of a given substring in a string.
Code:
int StringHandler::lastIndexOf(string src, const string s) {
unsigned int lastIndex = string::npos;
if (src.find(s, 0) == string::npos) {
return -1; } else {
bool isLast = false; unsigned int i = 0; do {
lastIndex = src.find(s, i);
if (lastIndex != string::npos) { i = lastIndex + 1;
if (i == src.size()) { isLast = true;
} } else { isLast = true;
} } while (!isLast);
} return lastIndex;
}
My problem is: execution steps into an if with a false condition! Check the values of i and src.size() at the right panel. How could be possible for the program to run the highlighted statement? The if condition above is false! [URL]. I could use char arrays, for example, but this kind of false validation has happened to me more than once, I'm using G++ 4.5 with these flags: -O0 -g -Wall -c
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Jan 23, 2010
I've got a strange bug that I cannot figure out how to solve. Here is the function.
Code:
int getnexttab(char input[], int index, int length)
{
[code]....
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May 13, 2009
Please look at the comments
Code:
/*
* TEST CASE TO CHECK DIFFERENCES BETWEEN STRING AS
[code]...
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Jan 27, 2011
I have the following char* array
Code:
char* chrarray[] = {"Hello","LinuxQuestions"};
and I need to pass it into a function, how should I define my function in the header file?
[code]....
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Nov 6, 2010
Program in CSay I have a char array of 1024 bytes called buf1.But I only want to print the chars in index 0 up to index 30. I know I could do this with a for loop. But is there any other way? What about maybe storing from 31-1024 to another char array say buf2 with strcpy and somehow popping 31+ out of the buf1 char array?
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Aug 30, 2010
I need to convert an int array into a char* array.
I'm using the following code:
Code:
But it returns me
Code:
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