根据公司需求写的一个linux 巡检小脚本

#!/bin/bashcheck_process(){tolprocess=`ps auxf|grep DisplayMa[nager]|wc -l`#if [ "$tolprocess" -lt "1" ];thenif [ "$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 [ "$conlog" -ge "1" ];then    	echo 'syslog-ng ok'    fielif [ -e /etc/syslog.conf ];then	conlog=`cat '/etc/syslog.conf'|grep "10.70.72.253"|wc -l`	if [ "$conlog" -ge "1" ];then   		echo 'syslog ok'    fielse	echo 'log not find or error'fi}check_cpuidle(){mincpu=`sar -u 2 10|grep all|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|grep SwapTotal|awk '{print $2}'`#awk '/SwapTotal/{total=$2}/SwapFree/{free=$2}END{print (total-free)/1024}' /proc/meminfo useswap=`awk '/SwapTotal/{total=$2}/SwapFree/{free=$2}END{print (total-free)}' /proc/meminfo `util=`awk 'BEGIN{printf "%.1f/n",'$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 -v Use|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_processecho '################### check syslog ####################'check_logecho '################### check cpuidle ###################'check_cpuidleecho '################### echo memory stat ################'check_memecho '################### check fdisk #####################'check_diskecho '################### check io used ###################'check_ioecho '################### check swap used #################'check_swapecho '################### check dmesg #####################'check_dmesgecho '################### check inode #####################'check_inodeecho '################### check disk used #################'check_df