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在可执行 java命令的情况下查找过程如下:
执行which java
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| 1 2 | [root@localhost ~] # which java /usr/bin/java |
执行ls -lrt /usr/bin/java
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| 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
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| 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:
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| 1 2 3 4 5 6 7 8 9 | [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] # |
