CODEWITHSUNDEEP
cunixcommand-prompttext-formatting
Bunny Bunny
Bunny Bunny

Reputation: 825

clearing prompt in unix

With the following code I am erasing the prompt but not clearing the screen. What chould be the reason?

   printf("\033[7mHello how are you doing? press 'q' to quit\033[0m");
   fflush(stdout);
   ----
   doing some other stuff
   ----

   printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\
           \b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\033[0m");
           fflush(stdout);

I am erasing the prompt but the traces of it appear until I type something that long.

Upvotes: 1

Views: 125

Answers (2)

Fingolfin
Fingolfin

Reputation: 5533

printf("\033[2J"); This would clear the terminal screen.

I see you're using skip character \b, are you trying to reset the terminal cursor to the beginning? because that can also be done with this:
printf("\033[1;1H");

Upvotes: 1

user1944441
user1944441

Reputation:

\b only moves the cursor position, it doesn't erase the prompt.

To erase write a space for every backspace.

char * hello = "\033[7mHello how are you doing? press 'q' to quit\033[0m" ;
int len = strlen( hello ) ;
for( int i = 0 ; i < len ; i++ )
{
    printf("\b \b");
}

Upvotes: 1

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