java - -bash : java: command not found in Centos5

Question

# java -version
-bash: java: command not found

我在 usr/local 中有 jdk1.8.0_40 这个文件夹。 当我导航到该文件夹​​并键入 alternatives --config jar 时，我得到了这样的输出

There is 1 program that provides 'jar'.

      Selection    Command
    -----------------------------------------------
    *+ 1           /opt/jdk1.8.0_40//bin/jar

    Enter to keep the current selection[+], or type selection number: 

这些是jdk中的内容

bin    include     lib      README.html  THIRDPARTYLICENSEREADME-JAVAFX.txt
COPYRIGHT  javafx-src.zip  LICENSE  release  THIRDPARTYLICENSEREADME.txt
db     jre         man      src.zip

Answer 1

您需要将安装路径添加到 PATH 变量中。 Bash 仅在您的 PATH 变量定义的路径中查找可执行文件。