Re: bash, perl, C
On Sat, Jan 08, 2005 at 01:00:37AM +0100, Rabin Vincent wrote:
> On Sat, 8 Jan 2005 00:18:33 +0100, Gerard Robin <firstname.lastname@example.org> wrote:
> > If i use the sleep of Perl there nothing is displayed at though with the sleep
> > of the shell the numbers 5 4 3 2 1 0 are displayed as I want.
> > And, I don't understand why the sleep of Perl doesn't work ?
> The sleep function works, but the output that has been outputted with
> print has not been flushed. To make Perl automatically flush after
> every print statement, put this line in your script:
> $| = 1;
> This enables the OUTPUT_AUTOFLUSH. You only need to do this once in
> the script. The name of the variable is just a pipe. Once you do this,
> the script works just as it did with the shell's sleep.
> > I think it is not coherent to use the sleep of the shell whereas Perl has such
> > function. And I tried to write this function in C to rewrite my program in
> > C ..... but the C function sleep in C works like in Perl ...
> Same thing with C. To make it flush, call fflush(0) after each time
> you call printf.
Thanks to all it's OK :-)
(exept in C fflush(0) fflush(output) gives a new line but now with man fflush ...)