跑Linux内存占⽤率的shell脚本#!/bin/bash
>>>>>>>>>>>>####
# Mem Used Script
# eg. ./mem.sh 10G & to start testing
# eg. ./mem.sh stop to stop testing and clear env
# update: 2020-04-21 charseki
>>>>>>>>>>>>####
num=$1
user=`whoami`
start()
{
if [ -d /tmp/memory ];then
echo "the dir "/tmp/memory" is already exist!, use it." >> mem.log
else
sudo mkdir /tmp/memory
mount -t tmpfs -o size=$num tmpfs /tmp/memory
fi
dd if=/dev/zero of=/tmp/memory/block >> mem.log 2>&1
}
linux shell编程求和stop()
{
rm -rf /tmp/memory/block
umount /tmp/memory
rmdir /tmp/memory
if [ -d /tmp/memory ];then
echo "Do not remove the dir \"/tmp/memory\", please check "
else
echo "clear env is done!"
fi
}
main()
{
if [ $num == 'stop' ];then
stop
elif [ $user != "root" ];then
echo "please use the \"root\" excute script!"
exit 1
else
start
fi
}
if [ $# = 2 -o $# = 1 ];then
main
else
echo 'Usage: <./mem.sh 10G &> to start or <./mem.sh stop> to clear env'
fi
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