linux环境中，

A=1这种命名方式，变量作用域为当前线程

export命令出的变量作用域是当前进程及其子进程。

可以通过source 脚本，将脚本里面的变量放在当前进程中

 

附带自己写的tomcat启动脚本

#!/bin/bashcat <
     
      startupTomcat.shck=\`ps -ef | grep tomcat1 | grep java | wc -l\`if [ \$ck = 0 ]; then /home/wdj/tomcat1/bin/startup.shexit 1fiEOF#ֱ直接执行该命令是不行的，因为tomcat启动需要JAVA_HOME变量，A=1这种方式，变量作用域为当前线程,export命令出的变量作用域是当前进程及其子进程。source 脚本，将里面的变量放在当前进程中cat <
      
       shutdownTomcat.shck=\`ps -ef | grep tomcat1 | grep java | wc -l\`if [ \$ck = 1 ]; then /home/wdj/tomcat1/bin/shutdown.shexit 1fiEOFif [ "$1" = "0" ]        then SHELL=shutdownTomcat.shelif [ "$1" = "1" ]        then SHELL=startupTomcat.shelse        echo "you must input param 0 or 1"        exit 1fiSERVERS="192.168.10.150 192.168.10.151"for SERVER in $SERVERSdo        /usr/bin/expect <<-EOF                set timeout -1                spawn scp $SHELL $SERVER:/                expect { spawn scp $SHELL $SERVER:/                expect {                        "*yes/no*" {send "yes\r"}                        "*password*" {send "1234567\r"}                }                       spawn ssh $SERVER "source /etc/profile;chmod +x /$SHELL;/$SHELL;rm -rf /$SHELL"                expect {                        "*yes/no*" {send "yes\r"}                        "*password*" {send "1234567\r"}                }                sleep 1        EOFdone