Linux平台下，尤其是没有图形界面的情况下，要对系统状态进行监控是比较麻烦的。下面是来自51cto一个系统监控的脚本，转载分享：
#!/bin/sh#systemstat.sh#Mike.XuIP=192.168.1.227top -n 2| grep "Cpu" >>./temp/cpu.txtfree -m | grep "Mem" >> ./temp/mem.txtdf -k | grep "sda1" >> ./temp/drive_sda1.txt#df -k | grep sda2 >> ./temp/drive_sda2.txtdf -k | grep "/mnt/storage_0" >> ./temp/mnt_storage_0.txtdf -k | grep "/mnt/storage_pic" >> ./temp/mnt_storage_pic.txttime=`date +%m"."%d" "%k":"%M`connect=`netstat -na | grep "219.238.148.30:80" | wc -l`echo "$time $connect" >> ./temp/connect_count.txt
貌似监控CPU、内存、硬盘、目录、网络连接数等，并将其记录到文件里面。现在还不是很懂，等后面懂了再来慢慢分析。
下面这个脚本只监控磁盘空间，当使用空间超过90％就通过发mail来发警告#!/bin/bash#monitor available disk spaceSPACE='df | sed -n '/ \ / $ / p' | gawk '{print $5}' | sed 's/%//'if [ $SPACE -ge 90 ][email protected]
下面这个脚本，监控CPU和内存的使用情况#!/bin/bash#script to capture system statisticsOUTFILE=/home/xu/capstats.csvDATE='date +%m/%d/%Y'TIME='date +%k:%m:%s'TIMEOUT='uptime'VMOUT='vmstat 1 2'USERS='echo $TIMEOUT | gawk '{print $4}' 'LOAD='echo $TIMEOUT | gawk '{print $9}' | sed "s/,//' 'FREE='echo $VMOUT | sed -n '/[0-9]/p' | sed -n '2p' | gawk '{print $4} ' 'IDLE='echo $VMOUT | sed -n '/[0-9]/p' | sed -n '2p' |gawk '{print $15}' 'echo "$DATE,$TIME,$USERS,$LOAD,$FREE,$IDLE" >> $OUTFILE