shell

shell 判斷 命令執行狀況

http://www.javashuo.com/article/p-gfovkwuf-kg.html

 

腳本例子：

一、 刪除垃圾文件

 

#!/bin/bash

cache_file=$(find . -name "*~")
cache_file+=' '
cache_file+=$(find . -name "*.swp")
cache_file+=' '
cache_file+=$(find . -name "*.py[co]")
cache_file+=' '
cache_file+=$(find . -name "*.bin")
cache_file+=' '
cache_file+=$(find . -name "*.log")
cache_file+=' '
cache_file+=$(find . -name "*.png")
cache_file+=' tmp/* !(tmp/.gitignore)'

for cache in ${cache_file}
do
    echo "Deleting file ${cache}" && rm -rf ${cache}
done

使用方法：

能夠在/etc/rc.local 中添加命令：

sh /root/cpu_test/test_reboot.sh &

兩個腳本要放在同一文件夾下。注意文件位置。

主腳本中的「4」 就是開機次數。能夠自行修改。

主腳本：

#! /bin/bash

# filename: test_reboot.sh

cores=`cat /proc/cpuinfo| grep "cpu cores" | awk -F ' ' '{print $4}'| uniq`

echo `date +"%Y-%m-%d %H:%M:%S"` "power on" >> /root/cpu_test/reboot.log

sleep 1

A=`cat /root/cpu_test/reboot.log | grep "power on" | wc -l`

if [ $A -gt "4" ]

then      

  echo "power on " $A "times" >> /root/cpu_test/reboot.log

else      

  sleep 30

  sh /root/cpu_test/all_cpu.sh $cores &

  sleep 1m

  reboot     

fi

cpu滿載腳本：

#! /bin/bash

# filename: all_cpu.sh

if [ $# != 1 ] ; then

  echo "USAGE: $0 <CPUs>"

  exit 1;

fi

for i in `seq $1`

do

  echo -ne "

i=0;

while true

do

i=i+1;

done" | /bin/sh &

  pid_array[$i]=$! ;

done

 

for i in "${pid_array[@]}"; do

  echo 'kill ' $i ';';

done