solaris​/bash

# wget ftp://ftp.gnu.org/gnu/bash/bash-2.03.tar.gz
# cd ../src
# tar xvzf ../arch/bash-2.03.tar.gz
# cd bash-2.03
# ./configure
# make
# make install

# export PS1='[\u@\h \W]\\$'

# CPU=(`sar 1 1 | tail -1 | awk '{print $3" "$5" "$6}'`)
# echo "${CPU[0]}"
# echo "${CPU[1]}"
# echo "${CPU[2]}"