Dsh command help!

Hi,

I am trying to run the following on our cluster:

/sw/bin/dsh -w node02 -e "/home/pc/thello.sh"

but I get an error:

dsh: no machine specified

I used to be able to run it a few months back, but they seem to have reinstalled the OS or something..

The output of the

 dsh -a uptime

is:

node01:  09:35:00 up 6 days, 20:17,  1 user,  load average: 5.84, 5.79, 5.85
node02:  09:35:00 up 18 days,  5:09,  0 users,  load average: 5.91, 5.74, 5.63
node03:  09:35:01 up 18 days, 21:43,  0 users,  load average: 6.09, 5.68, 5.56
node04:  09:35:01 up 18 days, 21:43,  0 users,  load average: 4.45, 4.65, 4.65

What should I be using as an argument? Or what should I be doing?

many thanks!

Are you talking of an AIX sp system?

Its a centOS system, details are:

-----
3.10.0-123.13.2.el7.x86_64 #1 SMP Thu Dec 18 02:09:51 CST 2014 x86_64 x86_64 x86_64 GNU/Linux
-----

 % cat /etc/*-release
NAME="Scientific Linux"
VERSION="7.0 (Nitrogen)"
ID="rhel"
ID_LIKE="fedora"
VERSION_ID="7.0"
PRETTY_NAME="Scientific Linux 7.0 (Nitrogen)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:7.0:GA"
HOME_URL="http://www.scientificlinux.org//"
BUG_REPORT_URL="scientific-linux-devel@listserv.fnal.gov"

REDHAT_BUGZILLA_PRODUCT="Scientific Linux 7"
REDHAT_BUGZILLA_PRODUCT_VERSION=7.0
REDHAT_SUPPORT_PRODUCT="Scientific Linux"
REDHAT_SUPPORT_PRODUCT_VERSION=7.0
Scientific Linux release 7.0 (Nitrogen)
Scientific Linux release 7.0 (Nitrogen)