Hello,

I have a problem with ssh and vmstat on AIX.
I want to run a vmstat from a client like this :

user@client> ssh -l user server " vmstat -t 60 10 > /tmp/vmstat.log & "

Problem is : the ssh don't terminate. In fact, the commande itself
seems to go in background,
when i hit Ctrl-C it stays alive (so i don't need a nohup);

But if i start this command with a crontab entry, it will hang
forever...

Any ideas ?

version of AIX is 5.3 on pSeries, but i'm pretty sure it ... well IT IS
the same on Solaris, i tested it. (Except that the -t option don't
work on Solaris)

Thanks in advance

Denis Valdenaire

On 2006-05-12, Denis Valdenaire <dvaldenaire@gmail.com> wrote:
> user@client> ssh -l user server " vmstat -t 60 10 > /tmp/vmstat.log & "
>
> Problem is : the ssh don't terminate. In fact, the commande itself
> seems to go in background,
> when i hit Ctrl-C it stays alive (so i don't need a nohup);

sshd is waiting for the descriptors attached to the vmstat to close (you
redirected stdout, but stdin and stderr are still there). Try:
ssh server "vmstat -t 60 10 >/tmp/vmstat.log </dev/null 2>/dev/null &"

--
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4 37C9 C982 80C7 8FF4 FA69
Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.

Thanks, it works perfectly.