Shell Scripting using Bash Syntax and Semantics.

Shell Scripting program to know use of variables ,environment variable and use of positional variables

RCS file: RCS/01_script,v
Working file: 01_script
head: 1.10
branch:
locks: strict
    root: 1.10
access list:
symbolic names:
keyword substitution: kv
total revisions: 10;    selected revisions: 10
description:
This is a shell script program to know the use of variables in shell script
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revision 1.10    locked by: root;
date: 2014/11/01 20:13:49;  author: root;  state: Exp;  lines: +3 -3
corrected some isssues
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revision 1.9
date: 2014/11/01 20:10:07;  author: root;  state: Exp;  lines: +4 -0
implemented $PS1 and $PS2
implemented $SHELL to know in which shell we are working
implemented $IFS
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revision 1.8
date: 2014/11/01 20:04:52;  author: root;  state: Exp;  lines: +3 -0
implemented environment variable $PATH
implemented environment variable $HOME
implemented environment variable $$
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revision 1.7
date: 2014/11/01 19:57:23;  author: root;  state: Exp;  lines: +6 -0
implemented environment variable like command line argument c
implemented $0
implemented $#
implemented $*
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revision 1.6
date: 2014/11/01 19:52:12;  author: root;  state: Exp;  lines: +1 -1
corrected
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revision 1.5
date: 2014/11/01 19:50:14;  author: root;  state: Exp;  lines: +2 -1
read command was included to read variable in run time
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revision 1.4
date: 2014/11/01 19:47:39;  author: root;  state: Exp;  lines: +2 -2
corrected spelling of variable salutation.
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revision 1.3
date: 2014/11/01 19:45:22;  author: root;  state: Exp;  lines: +4 -4
blank space was removed from the statements
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revision 1.2
date: 2014/11/01 16:14:13;  author: root;  state: Exp;  lines: +1 -1
*** empty log message ***
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revision 1.1
date: 2014/11/01 15:58:42;  author: root;  state: Exp;
Initial revision
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