#######################################################################
#  this script is used to "run" a command on multiple systems, 
#  allows both ssh and rsh commands.   ssh MUST be properly setup
#  for this to work.  rsh is a last resort and uses insecure .rhosts.
#  Solaris 8 is NOT supported for ssh... a good reason to upgrade...
#  this should work in Linux or HP-UX with minor adjustments... see
#  LINUX and HP-UX directories for comparable scripts, albeit dated... YMMV.
#######################################################################
>--> more runnow.sh
#!/bin/ksh
#   17nov2004   john meister
#  purpose:  script to execute command on all servers - encapulate in quotes
#  must be run from designated master ssh server
USAGE="usage: sh ./runnow.sh <command>, runs command on all systems - NOTE: encapsulate complex commands in quotes"
##################################
#       HEADER and FILE INFO
##################################
CMD="`echo "$1" | tr ' ' '_'  | tr '/' '-' | tr '|' '-' `" ; export CMD
DATE=`date | cut -c 5-11` ; export DATE
FDATE=`/usr/bin/date +%d%b%y-%H%M` ; export FDATE
FNAME="$CMD.$FDATE" ; export FNAME
LOG="/var/apache/htdocs/SystemInformation/$FNAME.txt" ; export LOG
echo " -- $CMD -- on $DATE -- "| tee $LOG     ###### NOTE writes over file when reexecuted ######
echo " ----------------------------------------------- "| tee -a $LOG
##################################
# Solaris 9 systems use ssh
##################################
HOSTS="host1 host2 host3 host4 ...
...host25 host26 host27" ; export HOSTS
#
for x in  $HOSTS
        do
        echo "\n### $x (`ssh $x uname -r` on `ssh $x uname -i | awk -F, '{print $2}'`) ###" | tee -a $LOG
        ssh $x $1 | tee -a $LOG
        done
##################################
# Solaris 8 systems use rsh
##################################
HOSTS8="host28 host29 host30 host31...
...host49 host50 host51 host52" ;  export HOSTS8
#
for x in  $HOSTS8
        do
        echo "\n### $x (`rsh $x uname -r` on `rsh $x uname -i | awk -F, '{print $2}'`) ###" | tee -a $LOG
        rsh $x $1 | tee -a $LOG
        done
#
##################################
echo " ------------- " | tee -a $LOG
echo "webpage:  http://the_server.com/SystemInformation/$FNAME.txt" | tee -a $LOG
echo " ------------- " | tee -a $LOG
mailx -s " $1 (`date +%d%b%y`)" jm < $LOG
##################################
#      ssh $x uptime | awk '{ print "system up " $3 " " $4 " at " $1 " load avg=" $10$11$12$13 }' | tee -a $LOG
#      ssh $x sar | grep Average | awk '{print "sar average is usr_"$2" sys_"$3" wio_"$4" idle_"$5"%"}' | tee -a $LOG
#      echo "System messages ($DATE):" | tee -a $LOG
#      ssh $x cat /var/adm/messages | grep "`date | cut -c 5-11`" | tee -a $LOG
#      rsh $x uptime | awk '{ print "system up " $3 " " $4 " at " $1 " load avg=" $10$11$12$13 }' | tee -a $LOG
#      rsh $x sar | grep Average | awk '{print "sar average is usr_"$2" sys_"$3" wio_"$4" idle_"$5"%"}' | tee -a $LOG
#      rsh $x cat /var/adm/messages | grep "`date | cut -c 5-11`" | tee -a $LOG
##################################