Linux error--->export ' = ' not a valid identifier for general reasons

general reason for export ' = ' not a valid identifier
The reason is that you modified the/etc/profile file .you added a space.
My Code is as follows:Export Java_home =/usr/java/jdk1.7.0_75
Export PATH = $JAVA _home/bin: $PATH
Export CLASSPATH =.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar

the changes are as follows:Export java_home=/usr/java/jdk1.7.0_75
Export path= $JAVA _home/bin: $PATH
Export classpath=.: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jar
The space on both sides of the equal sign is removed, so you should pay attention.

Linux error--->export ' = ' not a valid identifier for general reasons