几个简单的shell 脚本借鉴一下

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第一个定时抓取服务器JVM相关信息

#! /bin/sh    #get_current_timeexport JAVA_HOME=/opt/jdk1.6.0_10/export PATH=$JAVA_HOME/bin:$PATHexport CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH    date=`date "+%Y-%m-%d-%H:%M:%S"`    Root="/data/dxm/"        jmapends=$Root$date"_jmap.txt"jstackends=$Root$date"_jstack.txt"jstateends=$Root$date"_jstate.txt"                    #start to register the jmap messageecho "start to register the jmap to "$jmapendsjmap -histo:live `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jmapends    sleep 2    #start to register the jtack messageecho "start to register the jstack to "$jstackendsjstack -l `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jstackends    sleep 2    #start to register the jstate messageecho "start to register the jstate message to "$jstateendsjstat -gcutil -t -h20 `jps|grep Resin |awk 'NR==1'|awk '{print $1}'`  1000 20 > $jstateends

这个可以跑个定时器：

crontab -e

*/10 * * * * sh /timer/timer.sh #每十分钟抓一次

第二个脚本：对上面的脚本改进一下，只有系统负载达到指定的值之后才打印JVM信息

Java代码

#! /bin/sh
function printJVMMessage() {
#get_current_time
export JAVA_HOME=/opt/jdk1.6.0_10/
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH
#only the system load greate than 1*8PU then start to print the gc details
date=`date "+%Y-%m-%d-%H:%M:%S"`
Root="/data/dxm/"
jmapends=$Root$date"_jmap.txt"
jstackends=$Root$date"_jstack.txt"
jstateends=$Root$date"_jstate.txt"
#start to register the jmap message
echo "start to register the jmap to "$jmapends
jmap -histo:live `jps|grep Resin |awk 'NR==1'|awk'{print $1}'` > $jmapends
sleep 2
#start to register the jtack message
echo "start to register the jstack to "$jstackends
jstack -l `jps|grep Resin |awk 'NR==1'|awk'{print $1}'` > $jstackends
sleep 2
#start to register the jstate message
echo "start to register the jstate message to "$jstateends
jstat -gcutil -t -h20 `jps|grep Resin |awk 'NR==1'|awk'{print $1}'` 100020 > $jstateends
}
#System Max Load Per CPU,when the SystemLoad reached the MAX_LOAD * CPU_NUMBER then start register the jvm message
MAX_LOAD=1
CPU_NUMBER=`cat /proc/cpuinfo | grep processor |wc -l`
<strong style="background-color: rgb(255, 255, 255);"><span style="color: rgb(255, 0, 0);">TOTAL_LOAD_TO_WARN</span></strong>=$(($MAX_LOAD*$CPU_NUMBER))
#TOTAL_LOAD_TO_WARN=1
CURRENT_SYSTEM_LOAD=`uptime | awk '{print $(NF-2)}' | sed's/,//'`
Start_Time=`date "+%Y-%m-%d-%H:%M:%S"`
echo 'start to print the jvm message...currenttime is:'$Start_Time
echo 'current system load is'$CURRENT_SYSTEM_LOAD' and TOTAO_LOAD_TO_WARN is '$TOTAL_LOAD_TO_WARN
if [ $(echo "$CURRENT_SYSTEM_LOAD > $TOTAL_LOAD_TO_WARN"|bc) ==1 ]; then
echo 'printint the jvm message...'
printJVMMessage
fi
Finish_Time=`date "+%Y-%m-%d-%H:%M:%S"`
echo 'finish to print the jvm message...and current time is:'$Finish_Time

#! /bin/shfunction printJVMMessage() {#get_current_timeexport JAVA_HOME=/opt/jdk1.6.0_10/export PATH=$JAVA_HOME/bin:$PATHexport CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$CLASSPATH#only the system load greate than 1*8PU then start to print the gc detailsdate=`date "+%Y-%m-%d-%H:%M:%S"`Root="/data/dxm/"jmapends=$Root$date"_jmap.txt"jstackends=$Root$date"_jstack.txt"jstateends=$Root$date"_jstate.txt"#start to register the jmap messageecho "start to register the jmap to "$jmapendsjmap -histo:live `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jmapendssleep 2#start to register the jtack messageecho "start to register the jstack to "$jstackendsjstack -l `jps|grep Resin |awk 'NR==1'|awk '{print $1}'` > $jstackendssleep 2#start to register the jstate messageecho "start to register the jstate message to "$jstateendsjstat -gcutil -t -h20 `jps|grep Resin |awk 'NR==1'|awk '{print $1}'`  1000 20 > $jstateends}#System Max Load Per CPU,when the SystemLoad reached the MAX_LOAD * CPU_NUMBER then start register the jvm messageMAX_LOAD=1CPU_NUMBER=`cat /proc/cpuinfo | grep processor |wc -l`TOTAL_LOAD_TO_WARN=$(($MAX_LOAD*$CPU_NUMBER))#TOTAL_LOAD_TO_WARN=1CURRENT_SYSTEM_LOAD=`uptime | awk '{print $(NF-2)}' | sed 's/,//'`Start_Time=`date "+%Y-%m-%d-%H:%M:%S"`echo 'start to print the jvm message...currenttime is:'$Start_Timeecho 'current system load is'$CURRENT_SYSTEM_LOAD' and TOTAO_LOAD_TO_WARN is '$TOTAL_LOAD_TO_WARNif [ $(echo "$CURRENT_SYSTEM_LOAD > $TOTAL_LOAD_TO_WARN"|bc) == 1 ]; thenecho 'printint the jvm message...'printJVMMessagefiFinish_Time=`date "+%Y-%m-%d-%H:%M:%S"`echo 'finish to print the jvm message...and current time is:'$Finish_Time

第三个脚本：比较两个版本中jar包是否相同(有改变)：

#! /bin/sh    #compare the lib files's md5 int file1  with those in file2#if it only exist in file1 or one lib file's md5 is not equal i#with the other then print it to the log.txt     LibPath1=$1LibPath2=$2date=`date "+%Y-%m-%d-%H:%M:%S"`    LOG=$date"_log.txt"echo "-----------log file " $LOG     echo LibPath1: $LibPath1echo LibPath2: $LibPath2echo LibPath1: $LibPath1 \n >> $LOGecho LibPath2: $LibPath2 \n >> $LOGecho >> $LOGecho >> $LOG    for File in `ls -f $LibPath1|grep jar `;do      MD5=`md5sum $1$File |awk 'NR==1'|awk '{print $1}'`  File2=$LibPath2$File  #echo "File2-----------------" $File2        #if the same lib file exist  if [ ! -f "$File2" ]; then            echo $File only exist LibPath1        echo $File only exist LibPath1 \n >> $LOG        echo >> $LOG      #if the same file exist in directory2  else        MD52=`md5sum $File2 |awk 'NR==1'|awk '{print $1}'`        if [ "$MD5" != "$MD52" ]; then                echo the $File changed  \n >> $LOG                echo >> $LOG                echo the $File changed        fi      fi    done

上的那个文件为

md5compare.sh

运行是可以用以下命令运行：

./md5compare.sh  libpath1 libpath2

注意libpath1,libpath2 必须以"/" 结尾比如：

/opt/ROOT_2011-09-08-09:57:26/WEB-INF/lib/

而不是

/opt/ROOT_2011-09-08-09:57:26/WEB-INF/lib]]]

几个 简单的shell 脚本 借鉴一下

几个简单的shell 脚本借鉴一下