脚本应用之十五： 消耗cpu资源

2211we

作用：控制消耗cpu的百分比，配合某些测试项目使用
实现：设计包含死循环的函数，放入后台运行，通过控制个数实现控制消耗CPU资源的百分比
演示：


直接输入进程个数，　通过top指令查看cpu消耗百分比，不输入数字直接回车则表示清除所有后台函数







代码专区：

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#/bin/bash #  LY #  ------------------ #  Copyright 2016.04.17 LingYi (lydygly@163.com) QQ:1519952564 cpu_(){     while :; do         echo "This is a test information" >/dev/null         sleep 0.1     done } kill_cpu_(){     i=1     for process in $(ps aux | grep $1 | head -n -1 | awk '{print $2}'); do         if [[ ${process} != ${2} ]]; then kill -9 ${process}; let i++; fi         let i++     done } echo -e "\033[1;32mInput one number of the processes that will run in background.\033[0m" echo -e "\033[1;32mWhen they are running, you can use the command \"top\" to monitor in another window.\033[0m" echo -e "\033[1;32mKill the all processes, just press \"Enter\" key with inputing nothing.\033[0m"   echo -e "\033[1;32m\"Ctrl + c\" or press "Q" to exit.\033[0m"       while :; do     echo -ne "\033[1;34m\nInput number [ 1 - N ]: "     echo -ne "\033[1;31m"     read  num_moment     echo -ne "\033[0m"     if [[ ${num_moment} == 'q' ]] || [[ ${num_moment} == 'Q' ]]; then exit 0; fi     if [[ ! -z ${num} ]]; then kill_cpu_ $0 $$ >/dev/null 2>&1; fi     num=${num_moment}     for ((i=1; i<=num; i++)); do         cpu_ &     done done