#! /bin/bash

cpuInfo=

columns=`sar -P ALL 1 1 | grep -v Average | grep -v Linux | grep 0 | grep -v CPU| awk '{print NF}'|sort -u`
if [[ "columns" == "9" ]];then
   cpuInfo=`sar -P ALL 1 1 | grep -v Average | grep -v Linux | grep 0 | grep all | grep -v CPU| awk '{1="";2="";print}'|sort -u`
else
   cpuInfo=`sar -P ALL 1 1 | grep -v Average | grep -v Linux | grep 0 |grep all | grep -v CPU| awk '{1="";print}'|sort -u`
fi

i=1
parent=

for property in cpuInfo
do
    t=((i%7))
    if [t = 0 ];then
        str="str,'idle':'property'"
        str="{str#*,}"
        parent="parent{str},"
        str=
        i=0
    else
        casei in 
            1)
                str="str,'cpname':'cpu'"
                if [[property = 'all' ]];then
                    str="str,'flag':'property'"
                else
                    str="str,'flag':'property'"
                fi
            ;;
            2)
                str="str,'user':'property'"
            ;;
            3)
                str="str,'nice':'property'"
            ;;
            4)
                str="str,'system':'property'"
            ;;
            5)
                str="str,'iowait':'property'"
            ;;
            6)
                str="str,'steal':'property'"
            ;;

        esac
    fi
    i=((i+1))
done

result=`echo {parent//\'/\"}`
echo "[{result%,*}]"

使用：

[root@sre ~]# bash discover_cpuinfo.sh 
[{"cpname":"cpu","flag":"all","user":"0.50","nice":"0.00","system":"0.00","iowait":"0.00","steal":"0.50","idle":"99.00"}]