Programming Exercise I Construction (Cont.)
 
 
  - Examining the Exercise ( One ) Specifications Very Carefully
 
 
  The specifications have to be followed precisely.
 
 
  
 
 
 
  - Oracle Database 21c and JDBC Setup
 
 
  
  
  
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.
Some of the popular shells are
 - 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.