范例:
[root@centos8 ~]#cat install_tomcat_for_centos.sh
#!/bin/bash
#
#********************************************************************
#Author: wangxiaochun
#QQ: 29308620
#Date: 2020-02-09
#FileName: install_tomcat_for_centos.sh
#URL: http://www.wangxiaochun.com
#Description: The test script
#Copyright (C): 2020 All rights reserved
#********************************************************************
. /etc/init.d/functions
DIR=pwd
JDK_FILE="jdk-8u241-linux-x64.tar.gz"
TOMCAT_FILE="apache-tomcat-8.5.50.tar.gz"
JDK_DIR="/usr/local"
TOMCAT_DIR="/usr/local"
install_jdk(){
if ! [ -f "DIR/JDK_FILE" ];then
action "JDK_FILE 文件不存在" false exit;
elif [ -dJDK_DIR/jdk ];then
action "JDK 已经安装" false
exit
else
[ -d "JDK_DIR" ] || mkdir -pvJDK_DIR
fi
tar xvf DIR/JDK_FILE -C JDK_DIR
cdJDK_DIR && ln -s jdk1.8.* jdk
cat > /etc/profile.d/jdk.sh </etc/profile.d/tomcat.sh
id tomcat &> /dev/null || useradd -r -s /sbin/nologin tomcat
cat>TOMCAT_DIR/tomcat/conf/tomcat.conf < /lib/systemd/system/tomcat.service < /dev/null && action "TOMCAT 安装完成" || { action "TOMCAT 安装失败" false ; exit; }
}
install_jdk
install_tomcat



