On Fri, 2002-05-24 at 16:56, Jianping Zhu wrote:
> When I try to stop a process of backing up a files to tape drive by using
> tar i always fails.
> For example:
> i use ps -aux . I got following process .
> root 1484 0.1 0.0 1788 612 tty1 D 17:07 0:01 tar xvzf /dev/sto /home
> 
> when i tried to kill it by using kill 1484, but the process can not be
> killed, I have to restart my redhat linux 7.1 sever.
> It gives me too much trouble.

try:
kill -9 processid

the default signal sent by kill is, I believe 15 which I have always
understood that many programs see it as a sort of " Hey it would be
really nice if you would kill yourself" and then ignore it. kill -9 send
a KILL signal that should mean to most programs "oh this guy is serious
and REALLY wants me to die"  All but the rudest and impolite programs
will die and some not very happily.  I usually try the kill idnum first
and then whip out the big -9.

There is are a couple of  man pages that speak of this take a look at: 
man 7 signal and man kill for starters 

HTH

Bret



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