> > > 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
Ok.. I get your point. If I run the same script on my firewall it
returns:
[root@firewall] /root # ./try
not zero.
not zero.
[root@firewall] /root #
There's my problem. I do NOT have xntpd running either. Instead the ps
command lists "grep xntpd" as containing "xntpd" which is correct, but
not the wanted behaivor.
'sh -x try' gives:
[root@firewall] /root # sh -x try
+ ps axc
+ grep xntpd
+ [ -n 2569 root 892 S grep xntpd ]
+ echo not zero.
not zero.
+ ps axc
+ grep getty
+ [ -n 721 root 948 S /sbin/getty 38400 tty1
722 root 948 S /sbin/getty 38400 tty2
18571 root 888 S grep getty ]
+ echo not zero.
not zero.
[root@firewall] /root #
Is it clearer now?
/Anders
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