linux shell 指令碼擷取和替換檔案中特定內容

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1.從一串字串中擷取特定的資訊

要求1：擷取本機IP：menu.lst為系統鏡象的IP設定檔，需要從中擷取到本機IP資訊（從檔案擷取資訊）

1 timeout 12 default 03 4 title live5 find --set-root /casper/vmlinuz6 kernel /casper/vmlinuz boot=casper ignore_uuid showmounts ip=eth0,10.0.66.66,255.255.240.0,10.0.64.37 initrd /casper/initrd.lz

menu.lst

要求2：修改(替換)原檔案中特定內容：CenterServer.conf為SCC可執行程式的設定檔，需要將設定檔中的domain值改為本機IP。

 1 #CenterServer config file 2  3 # Logging Type: syslog|cerr|cout|file 4 LoggingType = cout 5  6 # Logging level: NONE|CRIT|ERR|WARNING|INFO|DEBUG|STACK 7 LogLevel = DEBUG 8 #LogLevel = INFO 9 10 #sip listen port11 UDPPort = 506012 #SCC domain ip13 Domain = 10.0.73.1414 CallTimeout = 6015 16 #RDS client working thread num (1--8)17 RDSClientThreadNum = 218 #RDS Client Log on|off19 RDSClientLog = off20 21 #Daemon process yes|no, default=yes22 IsDaemon = no23 24 #Web server addr25 WebServerUrl = http://localhost:900026 27 #SCC state Database28 DataBase = scc29 MySqlUserName = root30 MySqlUserPasswd [email protected]66631 32 MsIp = 127.0.0.133 MsPort = 9999

CenterServer.conf

實現指令碼：

 1 #!/bin/sh 2 MENULST="/JONET_boot/menu.lst" 3 SCC_PATH="/JONET/bin/SCC/CenterServer.config" 4 LOCALIP="`awk -F ‘,‘ ‘{print $2}‘ $MENULST |grep .`"; 5 echo $LOCALIP 6  7 modify_scc() 8 { 9     DOMAIN="`cat $SCC_PATH|grep Domain`"10     echo $DOMAIN11     echo $LOCALIP12     #sed -e ‘s/Domain = 10.0.66.66/Domain = 10.0.73.15/g‘ $SCC_PATH13     sed -i ‘s/‘"${DOMAIN}"‘/Domain = ‘"${LOCALIP}"‘/g‘ $SCC_PATH14 }15 16 17 modify_conf()18 {19     modify_scc20 }21 22 modify_conf23 24 exit 0

conf.sh

說明：sed -i ‘s/‘"${DOMAIN}"‘/Domain = ‘"${LOCALIP}"‘/g‘ $SCC_PATH

　　由於宏定義DOMAIN和LOCALIP在命令中使用$DOMAIN和$LOCALIP無法使用，需要使用‘"${DOMAIN}"‘和‘"${LOCALIP}"‘，使執行指令碼時能夠替換

 1 #!/bin/sh 2 MENULST="/JONET_boot/menu.lst" 3 SCC_PATH="/JONET/bin/SCC/CenterServer.config" 4 LOCALIP="`awk -F ‘,‘ ‘{print $2}‘ $MENULST |grep .`"; 5 echo $LOCALIP 6  7 modify_scc() 8 { 9     DOMAIN="`cat $SCC_PATH|grep Domain`"10     echo $DOMAIN11     echo $LOCALIP12     sed -i ‘s/‘"${DOMAIN}"‘/Domain = ‘"${LOCALIP}"‘/g‘ $SCC_PATH13 }14 15 modify_conf()16 {17     modify_scc18 }19 20 modify_conf21 22 exit 0

conf.sh