1.从一串字符串中获取特定的信息
要求1：获取本机IP：menu.lst为系统镜象的IP配置文件，需要从中获取到本机IP信息（从文件获取信息）
1 timeout 1 2 default 0 3 4 title live 5 find --set-root /casper/vmlinuz 6 kernel /casper/vmlinuz boot=casper ignore_uuid showmounts ip=eth0,10.0.66.66,255.255.240.0,10.0.64.3 7 initrd /casper/initrd.lz
要求2：修改(替换)原文件中特定内容：CenterServer.conf为SCC可执行程序的配置文件，需要将配置文件中的domain值改为本机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 port 11 UDPPort = 5060 12 #SCC domain ip 13 Domain = 10.0.73.14 14 CallTimeout = 60 15 16 #RDS client working thread num (1--8) 17 RDSClientThreadNum = 2 18 #RDS Client Log on|off 19 RDSClientLog = off 20 21 #Daemon process yes|no, default=yes 22 IsDaemon = no 23 24 #Web server addr 25 WebServerUrl = http://localhost:9000 26 27 #SCC state Database 28 DataBase = scc 29 MySqlUserName = root 30 MySqlUserPasswd =jonet@666 31 32 MsIp = 127.0.0.1 33 MsPort = 9999
实现脚本：
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 $DOMAIN 11 echo $LOCALIP 12 #sed -e 's/Domain = 10.0.66.66/Domain = 10.0.73.15/g' $SCC_PATH 13 sed -i 's/'"${DOMAIN}"'/Domain = '"${LOCALIP}"'/g' $SCC_PATH 14 } 15 16 17 modify_conf() 18 { 19 modify_scc 20 } 21 22 modify_conf 23 24 exit 0
说明：sed -i 's/'"${DOMAIN}"'/Domain = '"${LOCALIP}"'/g' $SCC_PATH
由于宏定义DOMAIN和LOCALIP在命令中使用$DOMAIN和$LOCALIP无法使用，需要使用'"${DOMAIN}"'和'"${LOCALIP}"'，使执行脚本时能够替换
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 $DOMAIN 11 echo $LOCALIP 12 sed -i 's/'"${DOMAIN}"'/Domain = '"${LOCALIP}"'/g' $SCC_PATH 13 } 14 15 modify_conf() 16 { 17 modify_scc 18 } 19 20 modify_conf 21 22 exit 0