CentOS下安装Tomcat并配置环境变量（改默认端口8080为8081）

分享在CentOS下安装Tomcat并配置环境变量（改默认端口8080为8081）的全过程，希望对大家有帮助。

第一步：下载tomcat压缩包

http://archive.apache.org/dist/tomcat/tomcat-7/v7.0.73/bin/

　　第二步：上传tomcat压缩包

[Hadoop@HadoopMaster app]$ ll
total 3092
drwxrwxr-x. 9 hadoop hadoop 4096 Feb 22 06:05 elasticsearch-2.4.3
-rw-r--r--. 1 hadoop hadoop 908862 Jan 10 11:38 elasticsearch-head-master.zip
-rw-r--r--. 1 hadoop hadoop 2228252 Jan 10 11:38 elasticsearch-kopf-master.zip
drwxr-xr-x. 10 hadoop hadoop 4096 Oct 31 17:15 hadoop-2.6.0
drwxr-xr-x. 15 hadoop hadoop 4096 Nov 14 2014 hadoop-2.6.0-src
drwxrwxr-x. 8 hadoop hadoop 4096 Nov 2 18:20 hbase-1.2.3
drwxr-xr-x. 8 hadoop hadoop 4096 Apr 11 2015 jdk1.7.0_79
drwxr-xr-x. 10 hadoop hadoop 4096 Nov 1 23:39 zookeeper-3.4.6
[hadoop@HadoopMaster app]$