怎么写linux 巡检小脚本 linux 巡检小脚本写法

#!/bin/bash

check_process(){

tolprocess=`psauxf|grepDisplayMa[nager]|wc-l`

#if [ "$tolprocess" -lt "1" ];then

if["$tolprocess"-ge"1"];then

    echo'process ok'

else

    echo'fail'

fi

}

check_log(){

if[ -e/etc/syslog-ng/syslog-ng.conf ];then

    conlog=`cat'/etc/syslog-ng/syslog-ng.conf'|grep"10.70.72.253"|wc-l`

    if["$conlog"-ge"1"];then

        echo'syslog-ng ok'

    fi

elif[ -e/etc/syslog.conf ];then

    conlog=`cat'/etc/syslog.conf'|grep"10.70.72.253"|wc-l`

    if["$conlog"-ge"1"];then

        echo'syslog ok'

    fi

else

    echo'log not find or error'

fi

}

check_cpuidle(){

mincpu=`sar -u 2 10|grepall|awk'{print $NF}'|sort-nr|tail-1`

if[ $(echo"${mincpu} < 20"|bc) = 1 ];then

#if [ "$mincpu" -le "20" ];then

    echo'cpu idle is less than 20% ,please check'

else

    echo'cpu idle is more than 20%, it is ok '

fi

}

check_mem(){

vmstat 2 10 

}

check_disk(){

chkdsk=`fdisk-l|egrep'failed|unsynced|unavailable'|wc-l`

if["$chkdsk"-ge"1"];then

    echo'fdisk check ok '

else

    echo'fdisk check find error,please check your disk '

fi

}

check_io(){

util=`sar -d 2 10|egrep-v'x86|^$|await'|awk'{print $NF}'|sort-nr|tail-1`

await=`sar -d 2 10|egrep-v'x86|^$|await'|awk'{print $(NF-2)}'|sort-nr|tail-1`

if[ $(echo"${util} < 80"|bc) = 1 ] && [ $(echo"${await} < 100"|bc) = 1 ] ;then

    echo'disk io check is fine'

else

    echo'disk io use too high '

fi

}

check_swap(){

tolswap=`cat/proc/meminfo|grepSwapTotal|awk'{print $2}'`

#awk '/SwapTotal/{total=$2}/SwapFree/{free=$2}END{print (total-free)/1024}' /proc/meminfo 

useswap=`awk'/SwapTotal/{total=$2}/SwapFree/{free=$2}END{print (total-free)}'/proc/meminfo`

util=`awk'BEGIN{printf "%.1fn",'$useswap'/'$tolswap'}'`

if[ $(echo"${util} < 0.3"|bc) = 1 ] || [ $(echo"${useswap} < 1024"|bc) = 1 ] ;then

    echo'swap use is ok '

else

    echo"useswap: $useswap kb, swap util is $util"

fi

}

check_dmesg(){

chkdm=`dmesg |egrep'scsi reset|file system full'|wc-l`

if["$chkdm"-ge"1"];then

    echo'dmesg test ok '

else

    echo'dmesg check find error '

fi

}

check_boot(){

chkdm=`cat/var/log/boot.msg|egrep'scsi reset|file system full'|wc-l`

if["$chkdm"-ge"1"];then

    echo'boot check fine '

else

    echo'boot check find error '

fi

}

check_inode(){

maxinode=`df-i|awk'{print $5}'|egrep-v'IUse|-'|sed's/%//g'|sort-nr|head-1`

if[ $(echo"${maxinode} < 80"|bc) = 1 ];then

    echo'inode check ok '

else

    echo'inode used more than 80% '

fi

}

check_df(){

dfuse=`df-HT|awk'{print $6}'|grep-vUse|sed's/%//g'|sort-nr|head-1`

if[ $(echo"${dfuse} < 80"|bc) = 1 ];then

    echo'disk used is less than 80% ,it is ok !'

elif[ $(echo"${dfuse} > 80"|bc) = 1 ] && [ $(echo"${dfuse} < 90"|bc) = 1 ];then

    echo'warning , disk used more than 80% and less than 90% '

else

    echo' Critical, disk used more than 90% '

fi

}

echo'################### check process ###################'

check_process

echo'################### check syslog ####################'

check_log

echo'################### check cpuidle ###################'

check_cpuidle

echo'################### echo memory stat ################'

check_mem

echo'################### check fdisk #####################'

check_disk

echo'################### check io used ###################'

check_io

echo'################### check swap used #################'

check_swap

echo'################### check dmesg #####################'

check_dmesg

echo'################### check inode #####################'

check_inode

echo'################### check disk used #################'

check_df