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Thanks for this code snippet. Could you please help me what if I have to do both simultaneously like in shell when Ctrl+l is pressed it clears the screen and the shell waits for the input also when...

Sorry, I will use tags from now onwards.

Thanks


Please help with the problem

Thanks to all for their kind help. I implemented it as following:

#include<termios.h>
#include<unistd.h>
main()
{
char i;
i=getch();

printf("%d\n",i);
if(i==12)
...

Thanks, But I got stuck when the command length is more than 3 pipes. I made that program and is running fine on 3 pipes but more than that my program is not able to handle.

In the following code I scan the Ctrl+L and it returned the value 12 but it needs a enter key. Is there any function in Unix (C) so that the typed char should not appear on the screen. Like one in...

I am using the pipe command but I am unable to run it successfully
The command like
ls|more

Please help how to implement that piping.

To implement the facility of piping and redirection I used the two commands dup, dup2, and strtok for tokenizing the command.
But when I run the command
ls|more
it is not running fine as I have...

How I can detect a particular Key Combination through programming in Unix.

to trap the signals there are methods but control+L is not detected as a signal so how can I detect that combination of...

Could anybody tell me what the trap command does and how it performs the action it does. I had read the trap manual page but it is too concise that nothing is clear about it. Please tell how it works.

Hi ,

I have one question, suppose i am a normal user and when i use 'w' command , it shows who is logged on and what they are doing .
Now i want to stop others users to know what i am doing...

I would like to know where is the ulimit value stored in the shell. And how to get or modify it using the C program.
I run the command ulimit it shows me unlimited and quits.
Where that value is...

Could you please clarify my problem
I am making a program in C
Now I am getting the string from the user then How I can put it in that state that what user has hitted.
Any sample will me a great...

Thank You
Could you please clarify me more about the terminal types.
and if I am getting it as a string then how I can get the result of that like the colors.

I am getting the environment...

Hi all
I am facing a problem with redirection. Its somewhat related to parsing.
I am following the following steps.
1. take the command and tokenize it.
2. if redirection is there then give it...

I would like to override the default profile which is loaded when the system starts or When I run a program so that profile should get loaded in the settings.
Is there any system call to do so.

.

That is a type mistake sir/mam. I am just getting the string stored over there.

Dear All
could you please explain me what does the trap command do and how I can write a program which can work as a trap command(in C Language).

#include<stdlib.h>
main()
{
char *t=getenv("PS1");
printf("%s",t);
}

It gets the entry of environment variable and displays it. But I would like to have the execution result...

Q.1 Diffrence between terminal and pseudo-terminal ?

Q.2 What is terminal login ? What is a netwok Login ?

Q.3 What is meant by baud rate of a terminal ?

Q.4 which structure is used for job...

Dear All,
I have a problem with export. I would like to show a prompt on my shell but as I receive the export environment variable pointer it is the string.
Like it is shown in the Title of this...

Could anybody tell me how I can detect a particular key combination and perform a particular task on that event. e.g. if I press Ctrl + L on the shell then it clears the screen. Please tell me how it...

When I set it
set backspace=""
Then doesn't happened and the vi was as it is but when I set it as
set backspace="f"
Then backspace stopped working
Could you please tell me how to enable it...

Could anybody tell me how I can disable or enable the backspace key in vi editor.
I would like to feel the essence of the commands of vi editor but as I have the latest version and it is supporting...

can any one help me in designing a shell in unix like bash shell using c language

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help