Refresh stdoutput

[domenicodl]

Hello,
I'd like to refresh the stdoutput. Suppose that I have the following program

BEGIN{
print "execution";
for(i = 0; i<4; i++)
print i;
}

the output is
execution
0
1
2
3

rather I would like to refresh the stdouput as the for loop runs, thus just one line of the stdoutput updates its value without having a long sequence of print.
It is like:

execution
0 then this becomes 1, 2....

Thank you in advance.

I checked "fflush" and system("") but none of them helped me, maybe I used them mistakenly.

 

[feherke]

Hi

That is usually solved using your old friend, the carriage return ( [tt]\r[/tt] ) character :

BEGIN {
  print "execution"
  for (i=0; i<4; i++)
    printf "\r%d", i
}

[ul]
[li]Used the [tt]printf[/tt] statement because it not outputs the [tt]ORS[/tt]. ( The alternative is to use [tt]print[/tt] but set [tt]ORS[/tt] to empty string. )[/li]
[li]Output the carriage return character which has the effect of moving the cursor to the beginning of current line.[/li]
[/ul]


Feherke.

http://free.rootshell.be/~feherke/