使用shell指令碼簡單類比對特定檔案同時讀寫操作

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使用shell指令碼簡單類比對特定檔案同時讀寫操作
檔案內容的格式：
field1    ,       field2    ， field3    ,       field4
以，為分隔字元，但是存在空格。

 

• 指令碼用法如下：

./check_write_read.sh 10

• 輸出結果：

Thu Apr 27 19:59:44 CST 2017:Read operation finished670Thu Apr 27 19:59:44 CST 2017:Write operation finished671Thu Apr 27 19:59:46 CST 2017:Check Write OKThu Apr 27 19:59:56 CST 2017:Check Read OK

• 指令碼內容：

if [[ $1 =~ ^[1-9] ]]; then   timeInterval=$1else   echo "parameter error, should be number"   exit 1fitimefrom_1=`date +%s`timeto_1=`expr $timefrom_1 + $timeInterval`timenow_1=$timefrom_1count_1=0timefrom_2=`date +%s`timeto_2=`expr $timefrom_2 + $timeInterval`timenow_2=$timefrom_2count_2=0function rand(){    min=1    max=292    num=$(cat /dev/urandom | head -n 10 | cksum | awk -F ‘ ‘ ‘{print $1}‘)    echo $(($num%$max+$min))}function checkWrite(){ while read LINE do    resultMsg=`cat configdata.cfg | grep $LINE`    if [ -z "$resultMsg" -o "$resultMsg" == "" -o x"$resultMsg" == x ]; then           echo "write error"       echo "LINE:$LINE"       echo "resultMsg:$resultMsg"       exit 1    fi done<result_write.txt echo "`date`:Check Write OK"}function checkRead(){ while read LINE do    linenumber=`echo $LINE | cut -d : -f1`    linevalue=`echo $LINE | cut -d : -f2 | sed s/[[:space:]]//g`    resultMsg=`sed -n "$linenumber,1p" configdata.cfg | awk -F ‘,‘ ‘BEGIN{OFS=","}{print $1,$2}‘ | sed s/[[:space:]]//g`    resultMsg=`sed -n "$linenumber,1p" configdata.cfg | cut -d , -f1,2 |sed s/[[:space:]]//g`    if [ -z "$resultMsg" -o "$resultMsg" == "" -o x"$resultMsg" == x ]; then            echo "read error,it‘s null"        echo "linenumber:$linenumber"        echo "linevalue:$linevalue"        echo "resultmsg:$resultMsg"        exit 1    fi    if [ "$resultMsg" != "$linevalue" ]; then           echo "read error,value error"       echo "resultMsg:$resultMsg"       echo "linevalue:$linevalue"       exit 1    fi    #echo "resultMsg:$resultMsg"    #echo "linevalue:$linevalue" done<result_read.txt echo "`date`:Check Read OK"}#write operationfunction writeOperation(){   rm -f result_write.txt   until [ "$timenow_1" == "$timeto_1" ]   do           rnd_1=$(cat /dev/urandom | head -n 10 | cksum | awk -F ‘ ‘ ‘{print $1}‘)          echo "${rnd_1}">>result_write.txt          echo "${rnd_1}">>configdata.cfg          count_1=`expr $count_1 + 1`           timenow_1=`date +%s`   done   echo "$count_1" | tee -a result_write.txt   echo "`date`:Write operation finished"}#read actionfunction readOperation(){   rm -f result_read.txt   until [ "$timenow_2" == "$timeto_2" ]   do       rnd_2=`rand`       line="${rnd_2}"":""`sed -n "$rnd_2,1p" configdata.cfg | cut -d , -f1,2`"       echo $line>>result_read.txt       timenow_2=`date +%s`   done   echo "`date`:Read operation finished"}{   writeOperation}&{   readOperation}&wait#sleeptime=`expr $timeInterval + 2`#sleep $sleeptimecat result_write.txt | wc -l | teecheckWritecheckReadexit 0

使用shell指令碼簡單類比對特定檔案同時讀寫操作