如何使用Bash脚本从SAR报告中获取CPU和内存使用情况

该脚本与上面相比稍微不同。它在同一位置同时显示两者（CPU 和内存）平均值，而不是其他数据。

# vi /opt/scripts/sar-cpu-mem-avg.sh
 
#!/bin/bash
 
for file in `ls -tr /var/log/sa/sa* | grep -v sar`
do
    sar -f $file | head -n 1 | awk '{print $4}'
    echo "-----------"
    sar -u -f $file | awk '/Average:/{printf("CPU Average: %.2f%n"), 100 - $8}'
    sar -r -f $file | awk '/Average:/{printf("Memory Average: %.2f%n"),(($3-$5-$6)/($2+$3)) * 100 }'
    printf "n"
done

运行脚本后，你将看到如下输出。

# sh /opt/scripts/sar-cpu-mem-avg.sh
 
08/01/2019
-----------
CPU Average: 1.90%
Memory Average: 31.09%
 
08/02/2019
-----------
CPU Average: 4.90%
Memory Average: 31.18%
 
08/03/2019
-----------
CPU Average: 4.89%
Memory Average: 31.29%
 
08/04/2019
-----------
CPU Average: 2.82%
Memory Average: 31.24%
 
08/05/2019
-----------
CPU Average: 1.76%
Memory Average: 31.28%
.
.
.
08/29/2019
-----------
CPU Average: 3.83%
Memory Average: 33.15%
 
08/30/2019
-----------
CPU Average: 5.80%
Memory Average: 33.19%

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