#! /bin/bash
# filename killcpu.sh
endless_loop()
{
echo -ne "i=0;
while true
do
i=i+100;i=100
done" | /bin/bash &
}
if [ $# != 1 ] ; then
echo "USAGE: $0 "
exit 1;
fi
for i in `seq $1`
do
endless_loop
pid_array[$i]=$! ;
done
for i in "${pid_array[@]}"; do
echo 'kill ' $i ';';
done
chmod 777 killcpu.sh
./killcpu.sh 3 #表示运行3个进程，观察cpu使用情况，依次增长
批量杀进程命令（例如杀关于nginx的进程）
ps -ef | grep nginx | grep -v grep | awk '{print "kill -9 "$2}' | sh
控制变量法可以参考
https://blog.csdn.net/luckywang1103/article/details/79202751
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