title: JAVA not in path although JAVA_HOME set
body: <p>I have set all the requirement variables in the /etc/profile but when launching elasticsearch, it is still not find Java. How i can set the environment variable. That's my /etc/profile</p>
  
  <pre><code>PATH=$PATH:$HOME/bin
  APPLICATIONS=$HOME/Applications
  JAVA_HOME=$APPLICATIONS/jdk1.7.0_79
  PATH=$JAVA_HOME/bin:$PATH
  
  export APPLICATIONS
  export JAVA_HOME
  export PATH
  </code></pre>
  
  <p><strong>Output of commands</strong></p>
  
  <pre><code>[root@87500e63467f Applications]# echo $PATH
  /root/Applications/jdk1.7.0_79/bin:/root/Applications/jdk1.7.0_79/bin:/root/Applications/jdk1.7.0_79/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/root/bin:/root/bin
  [root@87500e63467f Applications]# echo $JAVA_HOME
  /root/Applications/jdk1.7.0_79
  [root@87500e63467f Applications]# java -version
  java version "1.7.0_79"
  Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
  Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)
  error: "Read-only file system" setting key "vm.max_map_count"
  Starting elasticsearch: which: no java in (/sbin:/usr/sbin:/bin:/usr/bin)
  Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME
                                                             [FAILED]
  </code></pre>
  
  <p>in the error, it says that ""Starting elasticsearch: which: no java in (/sbin:/usr/sbin:/bin:/usr/bin)"", it means really java isn't in that path, but how come when I echo $PATH, it shows that the java is in the path ?</p>