source: CMT/v1r21/mgr/cmt_system.sh

#!/bin/sh

export LC_ALL=C
#--------------------------------------------------
select_system ()
#--------------------------------------------------
{
  if test ! "${UNAME}" = "" ; then
    echo ${UNAME}
    return 0
  else
    UNAME=`uname`
  fi

  may_use_afs=1

  case ${UNAME} in
    Darwin)
      may_use_afs=0
      ;;
  esac

  if test "${may_use_afs}" = 1; then
    a=`fs sysname 2>/dev/null`
    if test $? = 0 ; then
      echo $a | \
        sed -e "s#[ :]##g" \
            -e "s#'# #g" \
            -e "s#Currentsysnameis##" \
            -e "s#Currentsysnamelistis##" | awk '{print $1}'
          
      return 0
    fi
  fi

  case ${UNAME} in
    LynxOS)
            echo `uname`-`uname -m`
            return 0
            ;;
    Linux)
           echo `uname`-`uname -m`
           return 0
           ;;
    Darwin)
           echo `uname`
           return 0
           ;;
    CYGWIN*)
           echo `uname`
           return 0
           ;;
    OSF1)
          if test `uname -r` = "V3.2" ; then
            echo alpha_v3
            return 0
          fi
          ;;
    HP-UX)
           if test `uname -m` = "9000/780" ; then
             echo hp9000s780
             return 0
           elif test `uname -m` = "9000/735" ; then
             echo hp9000s735
             return 0
           fi
           ;;
  esac

  echo `uname -m`
  return 0
}

#--------------------------------------------------
# main ()
#--------------------------------------------------

select_system