Liunx Generate certificate Title Keytool command not found

Today, a certificate is generated with OpenSSL, which later involves generating a certificate in the JKS format of the Java Keytool, and the result is entered Keytool

Bash:keytool:command not found ...

The result looked for a long time to discover Javahome all did not set. is also depressed. Hope to help with the same problem

Configure environment variable  
vi/etc/profile  
 i insert 
 Add the following three lines to the file finally note the directory version of the Java_home for you to unzip the JDK version of the JDK for you download
export Java_ home=/java/jdk1.7.0_79  
export  classpath=.:%java_home%/lib/dt.jar:%java_home%/lib/tools.jar  
Export Path= $PATH: $JAVA _home/bin