A few simple shell scripts to draw

First timed crawl server JVM related information

#! /bin/sh
    
#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
    
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" $jmap Ends
jmap-histo:live ' jps|grep Resin |awk ' nr==1 ' |awk ' {print $} ' > $jmapends sleep
    
2
    
#start to Regis ter the Jtack message
echo "Start to register the Jstack to" $jstackends the
jstack-l ' jps|grep Resin |awk ' nr==1 ' | awk ' {print} ' > $jstackends sleep
    
2 #start to
    
Register the jstate message
echo ' start to register th E jstate message to "$jstateends
jstat-gcutil-t-h20 ' jps|grep Resin |awk ' nr==1 ' |awk ' {print $} '  1000 T $jstateends

This can run a timer:

Crontab-e

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

Second script: Improve the script above to print JVM information only after the system load reaches the specified value

Java Code #! /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 R Esin |awk ' nr==1 ' |awk ' {print} ' > $jmapends     sleep 2    #start to register the Jtack message& nbsp echo "Start to register" Jstack to "$jstackends   jstack-l ' jps|grep Resin |awk ' nr==1 ' |awk ' {print} ' > $js tackends    Sleep 2  &nbsP #start to register the Jstate message  echo ' start to register ' jstate message to ' $jstateends   Jstat-gcutil -t-h20 ' jps|grep Resin |awk ' nr==1 ' |awk ' {print $} '   1000 > $jstateends    }      #System Max Load per Cpu,when The systemload reached the max_load * Cpu_number then start register the JVM message  M ax_load=1    cpu_number= ' Cat/proc/cpuinfo | grep processor |wc-l '     <strong style= ' Background-color:rgb (255, 255, 255); " ><span style= "Color:rgb (255, 0, 0);" >total_load_to_warn</span></strong>=$ (($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...curre Nttime is: ' $Start _time  echo ' current system load are ' $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 ' $ finish_time 

#! /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.t XT "Jstackends= $Root $date" _jstack.txt "jstateends= $Root $date" _jstate.txt "#start to register the JMAP message echo" star  T to register the Jmap to "$jmapends jmap-histo:live ' jps|grep Resin |awk ' nr==1 ' |awk ' {print} ' > $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 '} ' > $jstackends sleep 2 #start to register the jstate message echo "Start to register the JS Tate message to "$jstateends jstat-gcutil-t-h20 ' jps|grep Resin |awk ' nr==1 ' |awk ' {print $} ' 1000 > $jstateend s} #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= ' C At/proc/cpuinfo |

 grep processor |wc-l 'Total_load_to_warn=$ (($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 E Cho ' current system load are ' $CURRENT _system_load ' and Totao_load_to_warn is ' $TOTAL _load_to_warn if [$ (Echo $CURRENT _sy Stem_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 Prin t the JVM Message...and current time is: ' $Finish _time

Third script: Compare two versions for the same jar package (with changes):

#! /bin/sh #compare The Lib files ' s MD5 int file1 with those in file2 #if it to exist in File1 or one lib file ' s MD5 
    
Is isn't equal I #with the other then print it to the Log.txt libpath1=$1 libpath2=$2 date= ' Date ' +%y-%m-%d-%h:%m:%s ' log= $date "_log.txt" echo "-----------log File" $LOG echo LibPath1: $LibPath 1 echo LibPath2: $LibPath 2 echo Li BPath1: $LibPath 1 \ >> $LOG echo LibPath2: $LibPath 2 \ >> $LOG echo >> $LOG echo >> $LOG fo
R File in ' ls-f $LibPath 1|grep jar '; Do md5= ' md5sum $1$file |awk ' nr==1 ' |awk ' {print} ' file2= $LibPath 2$file #echo ' File2-----------------' $File 2 #if The same LIB file exist if [! f "$File 2"]; Then echo $File exist LibPath1 echo $File only exist LibPath1 \ r >> $LOG echo >
        > $LOG #if The same file exist in Directory2 else md52= ' md5sum $File 2 |awk ' nr==1 ' {print $} ' If ["$MD 5"!= "$MD 52"];
   Then             echo the $File changed \ r >> $LOG echo >> $LOG echo the $File ch Anged fi fi Done

The file on the

md5compare.sh

Running is possible with the following command:

./md5compare.sh  Libpath1 libpath2

Note Libpath1,libpath2 must end with "/" such as:

/opt/root_2011-09-08-09:57:26/web-inf/lib/

Instead of

/opt/root_2011-09-08-09:57:26/web-inf/lib]]]