A jdk and TOMCAT step-by-step installation shell script in linux just written today

The JDK and the shell script installed by TOMCAT in one step in a linux system are installed in the usrjava directory, and tomcat is installed in the usrlocal Directory. if the directory does not exist, it is automatically created, you only need to put the jdk and tomcat tar packages and scripts in the same directory, run the script to install JDK in the/usr/java directory of one-step installation of JDK and TOMCAT in a linux file, tomcat is installed in the/usr/local directory. if the directory does not exist, it is automatically created. you only need to put the tar package and script of jdk and tomcat in the same directory and execute the script. PS: This script can be executed repeatedly. repeated execution will automatically delete the jdk and tomcat directory that was last installed 01 #! /Bin/sh02 03if [-e/usr/java]; then04 echo "delete old exist jdk... "05 sleep 206 rm-rf/usr/java07 echo" install new jdk... "08 mkdir/usr/java09 sleep 210 tar zxvf jdk *-C/usr/java11else12 mkdir/usr/java13 tar zxvf jdk *-C/usr/java14fi15 16 JDKPATH = 'ls/ usr/java '17echo $ {JDKPATH} 18 19 echo ">/etc/profile20echo" # jdk env ">/etc/profile21echo" JAVA_HOME =/usr/java/$ {JDKPATH} ">>>/etc/profile22echo 'path = $ JAVA_HOME/bin: $ PATH '>/etc/profile23echo' CLASSPATH =.: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar '>/etc/profile24echo 'export JAVA_HOME'>/etc/profile25echo 'export path'>/etc/profile26echo 'export classpath'>/etc/profile27 28if [-e/usr/local/apache-tomcat *]; then29 echo "delete old exist tomcat... "30 sleep 231 rm-rf/usr/local/apache-tomcat * 32 echo" install new tomcat... "33 sleep 234 tar zxvf apache-tomcat *-C/usr/local35else36 tar zxvf apache-tomcat *-C/usr/local37fi38 39cd/usr/local/apache-tomcat * 40 TOMCATPATH = 'pwd' 41echo $ {TOMCATPATH} 42 43 echo "">/etc/profile44echo "# tomcat env">/etc/profile45echo "TOMCAT_HOME =$ {TOMCATPATH}"> >/etc/profile46echo 'path = $ TOMCAT_HOME/bin: $ PATH '>/etc/profile: execute source/etc/profile to make the environment variable take effect.