Re: [leaf-user] Bering RC3 updatetime script not working..

[H. D. L. <lea...@du...>]

Hi,

I'll try again.

On 2002.09.22_18:19:39_+0000, H. D. Lee wrote:
> On 2002.09.22_13:00:44_+0000, Anders Åkesson wrote:
> > Hi!
> > 
> 
> Hi,
> 
> > I have wondered why my firewall never updates it's hw or sys clock
> > although it should. I found that the updatetime script in
> > /etc/multicron-d doesn't work.
> > 
> > updatetime () {
> > 
> >         [ -f /etc/default/rcS ] && . /etc/default/rcS
> >         [ "$GMT" = "-u" ] && GMT="--utc"
> >         if [ -n "`ps axc | grep xntpd`" ]; then
> >                 hwclock --systohc $GMT
> >         else
> >                 [ "$lrp_DATE_SERVER" != "" ] \
> >                         && rdate -s $lrp_DATE_SERVER \
> >                         && sleep 2 && hwclock --systohc $GMT
> >         fi
> > }
> > 
> > This code will ALWAYS go into the first option of the if-statement. 
> > 
> > The length of "`ps axc | grep xntpd`" will always be non-zero because
> > 'grep xntpd' will be launched as a new process due to the pipe. 
> > 
> 
> No, the shell will return the value from the grep appropriately. I
> haven't tested this with ash (the shell used by Bering). Only with ksh, 
> so I may be wrong. Following commands prove my statement:
> 
> $ ps axc | grep xntpd
> $ echo $?
> 1

This may be a wrong way to proof thing, as I state so in another mail
following this, in the same thread. But I could still see zero length of
string returned.

> $ ps axc | grep getty
>   494 tty1     S      0:00 getty
>   495 tty2     S      0:00 getty
>   [...]
> $ echo $?
> 0
> 

I have created a script just to test this:
$ cat try
#! /bin/sh

if [ -n "`ps axc | grep xntpd`" ]; then
        echo "not zero."
else
        echo "zero."
fi

if [ -n "`ps axc | grep getty`" ]; then
        echo "not zero."
else
        echo "zero."
fi

$ ./try
zero.
not zero.

As above, I am not running xntpd, but getty exist on the process list.

HTH

> CMIIW
> 
> > 
> > /Anders
> > 
> 
> -- 
> H. D. Lee
> 

-- 
H. D. Lee