tail -f problem.....please help

hello all

i don't know if this is the right place ( if not sorry) can some one tell me what is going on here: here is the problem


if i run this


tail -f cardout.dat <---------- works fine BUT if i try this

tail -f cardout.dat | perl4 sclrk.pl /4 /otest.log <-----this don't work but this does:

tail -1000 cardout.dat | perl4 sclrk.pl /4 /otest.log

WHY can't i get the -f to work? ( i need the -f to work) also to this is in windows/dos

is there a way to fix it? or is there other program that is like tail -f that i can get?


please help

1. do you use "tail" on windows? the linux forum is three lines above...

2. tail -f leaves the file open for reading. tail -1000 closes it after reading. probably it´s the input buffering feature of perl. you should make it work if you disable input buffering. (can´t tell you how, ask in the perl forum)

they told me to ask in here

you are not supposed to ask the same question again...

simply ask: "how do i disable input buffering in perl?" ... why do i need to tell you this twice?

good night,
M

ok look


when i posted this question in the perl i was told to post here I ( i posted in the perl one first) WAS EXPLAINING WHY I POSTED HERE!! I didn't mean THE NEW question. also to THAT IS NOT the problem:

here is why:


Unfortunately the way Dos or a dos window handle STDIN and STDOUT is not the same way as it works in Linux/Unix. Tail is a ported Unix utility that displays the last few lines of a file and if run with -f will do it interactively (that is any changes to a file will be sent out to STDOUT). In linux/unix this is a great tool for monitoring changes to a file and sending those changes to a waiting program that collects it's input from STDIN. This does not work as expected in DOS. tail -f will display the changes in a file but using the | (pipe) command to send it to a waiting program will not work as it should and dos not seem to pick up the piped data. (hangs). There is no fix I can think of.


so to answer your other question yes i uses it in windows I WAS HOPING THAT SOMEONE MADE A PROGRAM THAT WOULD LET THIS WORK!!!



so good night to you to!