centos查找已安装的jdk路径的方法-Linux老运维

在可执行 java命令的情况下查找过程如下:

执行which java

1 2	`[root@localhost ~]` `# which java` `/usr/bin/java`

执行ls -lrt /usr/bin/java

1 2	`[root` `@localhost` `~]# ls -lrt /usr/bin/java` `lrwxrwxrwx.` `1` `root root` `22` `10` `月` `10` `08` `:` `06` `/usr/bin/java -> /etc/alternatives/java`

执行ls -lrt /etc/alternatives/java

1 2	`[root` `@localhost` `~]# ls -lrt /etc/alternatives/java` `lrwxrwxrwx.` `1` `root root` `73` `10` `月` `10` `08` `:` `06` `/etc/alternatives/java -> /usr/lib/jvm/java-` `1.8` `.` `0` `-openjdk-` `1.8` `.` `0.144` `-` `0` `.b01.el7_4.x86_64/jre/bin/java`

由上可知java的路径为: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64,进入该路径查看文件如下:

[root@localhost ~]
# cd /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64

[root@localhost java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64]
# ll

总用量 4

drwxr-xr-x. 2 root root 4096 10月 10 14:53 bin

drwxr-xr-x. 3 root root 132 10月 10 14:53 include

drwxr-xr-x. 4 root root 28 10月 10 08:03 jre

drwxr-xr-x. 3 root root 144 10月 10 14:53 lib

drwxr-xr-x. 2 root root 204 10月 10 14:53 tapset

[root@localhost java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64]
#

centos查找已安装的jdk路径的方法