Programming Exercise IV Construction (Cont.)
  1. Examining the Exercise Specifications Very Carefully
    2.

  2. Oracle Database 12c and JDBC Setup
    3.

    .profile is the shell startup file and gets executed whenever you login. It is used to set environment variables and shell options such as $PATH. If you modify the .profile file, you may need to execute the following command to re-compile the new environment: 
        undcemcs02> source ~/.profile
    Unix/Linux shell is the command interpreter used to pass commands to an operating system; so called because it is the part of the operating system that interfaces with the outside world:

    • Korn shell (.kshrc), which is a standard command and programming language. The startup configuration file is .kshrc.

    • Bash shell (.bashrc), which is largely compatible with sh and includes useful features from Korn shell ksh and C shell csh.

    • C shell (.cshrc), which is with a C-like syntax.

    • Z shell (.zshrc), which is similar to ksh with many additions to please csh users and some tcsh features.

    • TC shell (.tcshrc), which is C shell with file name completion and command line editing.


    The environment .profile is compiled when login regardless which shell is used. Check which shell we are using: 
      undcemcs02>      



      “We can know only that we know nothing.    
      And that is the highest degree of human wisdom.”    
      ― Leo Tolstoy, War and Peace